3(y − 5) − 2(у − 4) = 8
3y − 15 − 2y + 8 = 8
y = 8 + 15 − 8
y = 15

−5(5 − х) − 4х = 18
−25 + 5х − 4х = 18
−25 + х = 18
х = 43

$\frac{1}{3}(3x - 6) - \frac{2}{7}(7x - 21) = 9$
х − 2 − 2х + 6 = 9
−х + 4 = 9
−х = 5
х = −5

5,4(3y − 2) − 7,2(2y − 3) = 1,2
16,2y − 10,8 − 14,4y + 21,6 = 1,2
1,8y + 10,8 = 1,2
1,8y = 1,2 − 10,8
1,8y = −9,6
$y = -\frac{48}{5} : \frac{9}{5}$
$y = -\frac{48}{5} * \frac{5}{9}$
$y = -\frac{16}{1} * \frac{1}{3}$
$y = -\frac{16}{3} = -5\frac{1}{3}$