Решите уравнения Даю 20баллов! ====================================== 5(х-0,2)=0 0,8(у-7)...

5(х-0,2)=0
5х-1=0
5х=1
х=0,2

0,8(у-7) = 8
0,8у-5,6=8
0,8у=13,6
у=17

$5x - \frac{1}{8} = 3$
$5x = 3 \frac{1}{8}$
$x = \frac{25}{8} \div 5$
$x = \frac{25}{8} \times \frac{1}{5}$
$x = 0.625$

$4x - 1 \frac{4}{5} = 5.4$
$4x - 1.8 = 5.4$
$4x = 7.2$
$x = 1.8$

$7 \frac{3}{5} + 2x = 10.6$
$7.6 + 2x = 10.6$
$2x = 3$
$x = 1.5$

$10 + 3 \frac{1}{4} x = 23$
$10 + 3.25x = 23$
$3.25x = 13$
$x = 4$