5х=-60 0,5х=1,2 1/3х=12 5у=-5/8 4х-3=12-х (у+4)-(у-1)=6у 5х/3х-5=3 9(х-4)(3х+6)=0 3х в...

$x = - \frac{60}{5} = - 12$
$x = \frac{1.2}{0.5} = 2.4$
$x = 12 \div \frac{1}{3} = 12 \times \frac{3}{1} = 36$
$y = - \frac{5}{8} \div 5 = - \frac{5}{8} \times \frac{1}{5} = - \frac{1}{8}$
$4x + x = 12 + 3 \\ 5x = 15 \\ x = 3$
$y + 4 - y + 1 - 6y = 0 \\ - 6y = - 5 \\ y = \frac{5}{6}$
остальное сами. там легко