Matematika B - 2012. ljeto, 5.

$x=\frac{3+2a}{7}x=\backslash frac\{3+2\; a\}\{7\}$

$x=\frac{1+2a}{5}x=\backslash frac\{1+2\; a\}\{5\}$

$x=2a-4x=2\; a-4$

$x=2a-1x=2\; a-1$