Positioning and aligning many many matrices

Edit: I swapped begin{aligned} &ro{r_2+-1r_1}\ &end{aligned} with &ro{r_2+-1r_1}\ , added some linebreaks an now it looks quite well.

I am working on a python matrix editor(it’s still WIP) which outputs matrix equations as LaTex. In this case I tried to calculate an inverse matrix.
The matrices should align beneath one another, but the line continues beyond the document.

I also tried adding linebreaks(\andnewline) but it didn’t turn out as I hoped.

I want it to look something like this but better aligned.(This format doesn’t always work, and causes a huge amount of warning/error messages)

documentclass{article}
usepackage{amsmath,mathtools}

usepackage{nicefrac}

newenvironment{sysmatrix}[1]
 {left(begin{array}{@{}#1@{}}}
 {end{array}right)}
newcommand{ro}[1]{%
  xrightarrow{mathmakebox[rowidth]{#1}}%
}
newlength{rowidth}% row operation width
AtBeginDocument{setlength{rowidth}{3em}}

begin{document}

begin{alignat*}{2}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
1 & 1 & -1 & -1 & 0 & 1 & 0 & 0 \
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_2+-1r_1}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_3+-1r_1}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_2leftrightarrow r_3}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_4+-1r_1}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & -2 & -2 & 0 & -1 & 0 & 0 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_4+-1r_2}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & -2 & 2 & 0 & 0 & -1 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_4+-1r_3}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_1+1/2r_2}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & 0 & 1 & 0 & dfrac{strut 1}{strut 2} & 0 & dfrac{strut 1}{strut 2} & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_1+1/2r_2}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
&begin{aligned}
&ro{r_1+1/2r_2}\
&end{aligned}
begin{sysmatrix}{rrrr|rrrr}
1 & -2 & 1 & -2 & dfrac{strut -1}{strut 2} & 0 & dfrac{strut 3}{strut 2} & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
end{alignat*}
end{document}

I’m still very new to LaTex and don’t really know much about formating…
I hope you can help me.

documentclass{article}
usepackage{amsmath,mathtools}

addtolengthoddsidemargin{-1cm}
addtolengthtextwidth{2cm}
usepackage{nicefrac}

newenvironment{sysmatrix}[1]
 {setlengtharraycolsep{3pt}
left(begin{array}{@{}#1@{}}}
 {end{array}right)}
newcommand{ro}[1]{%
  xrightarrow{mathmakebox[rowidth]{#1}}%
}
newlength{rowidth}% row operation width
AtBeginDocument{setlength{rowidth}{3em}}
begin{document}

begin{alignat*}{2}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
1 & 1 & -1 & -1 & 0 & 1 & 0 & 0 \
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&ro{r_2+-1r_1}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}\
ro{r_3+-1r_1}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}
&ro{r_2leftrightarrow r_3}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
1 & -1 & -1 & 1 & 0 & 0 & 0 & 1 \
end{sysmatrix}\
ro{r_4+-1r_1}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & -2 & -2 & 0 & -1 & 0 & 0 & 1 \
end{sysmatrix}
&ro{r_4+-1r_2}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & -2 & 2 & 0 & 0 & -1 & 1 \
end{sysmatrix}\
ro{r_4+-1r_3}
&begin{sysmatrix}{rrrr|rrrr}
1 & 1 & 1 & 1 & 1 & 0 & 0 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
&ro{r_1+1/2r_2}
&begin{sysmatrix}{rrrr|rrrr}
1 & 0 & 1 & 0 & dfrac{strut 1}{strut 2} & 0 & dfrac{strut 1}{strut 2} & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}\
ro{r_1+1/2r_2}
&begin{sysmatrix}{rrrr|rrrr}
1 & -1 & 1 & -1 & 0 & 0 & 1 & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
&ro{r_1+1/2r_2}
&begin{sysmatrix}{rrrr|rrrr}
1 & -2 & 1 & -2 & dfrac{strut -1}{strut 2} & 0 & dfrac{strut 3}{strut 2} & 0 \
0 & -2 & 0 & -2 & -1 & 0 & 1 & 0 \
0 & 0 & -2 & -2 & -1 & 1 & 0 & 0 \
0 & 0 & 0 & 4 & 1 & -1 & -1 & 1 \
end{sysmatrix}
end{alignat*}
end{document}