How can I make a matrix equation smaller in way that it fits in one line on a page?

I have the following matrix equation written in latex.

documentclass[a4paper, 12 pt]{report}
usepackage{amsmath}
usepackage{amssymb}
usepackage[top=1in, bottom=1in, left=1.5in, right=1in]{geometry}
begin{document}

   [
begin{bmatrix}
   frac{-beta_2}{bx} & frac{beta_1}{bx} 
   addlinespace
   -frac{1}{bx} & frac{1}{bx}
end{bmatrix}
begin{bmatrix} 
   1 & -beta_1  
   1 & -beta_2 
end{bmatrix}
begin{bmatrix} 
   mathrm{q}_t  mathrm{p}_t 
end{bmatrix} 
+
begin{bmatrix}
   frac{-beta_2}{bx} & frac{beta_1}{bx} 
   addlinespace
   -frac{1}{bx} & frac{1}{bx}
end{bmatrix}
begin{bmatrix}
   -alpha_1 & -gamma_1 & 0 
   -alpha_2 & 0 & -gamma_2
end{bmatrix}
begin{bmatrix}
   1  mathrm{i}_t  mathrm{r}_t 
end{bmatrix}
=
begin{bmatrix}
   frac{-beta_2}{bx} & frac{beta_1}{bx} 
   addlinespace
   -frac{1}{bx} & frac{1}{bx}
end{bmatrix}
begin{bmatrix}
   varepsilon_{1t}  varepsilon_{2t} 
end{bmatrix}
]

end{document}

The output is provided below. This does not appear in one line. How can I make it smaller such that it appears in one line?

documentclass{article}
usepackage[margin=2.5cm]{geometry} % set textblock parameters suitably
usepackage{amsmath} % for 'bmatrix' env.
begin{document}
Put $kappa_0=1/(beta_1-beta_2)$, $kappa_1=beta_1/(beta_1-beta_2)$, 
and $kappa_2=beta_2/(beta_1-beta_2)$. Then
[
begin{bmatrix}
   -kappa_2 & kappa_1 
   -kappa_0 & kappa_0
end{bmatrix}
begin{bmatrix} 
   1 & -beta_1  
   1 & -beta_2 
end{bmatrix}
begin{bmatrix} 
   mathrm{q}_t  mathrm{p}_t 
end{bmatrix} 
+
begin{bmatrix}
   -kappa_2 & kappa_1 
   -kappa_0 & kappa_0
end{bmatrix}
begin{bmatrix}
   -alpha_1 & -gamma_1 & 0 
   -alpha_2 & 0 & -gamma_2
end{bmatrix}
begin{bmatrix}
   1  mathrm{i}_t  mathrm{r}_t 
end{bmatrix}
=
begin{bmatrix}
   -kappa_2 & kappa_1 
   -kappa_0 & kappa_0
end{bmatrix}
begin{bmatrix}
   varepsilon_{1t}  varepsilon_{2t} 
end{bmatrix},.
]

end{document}