3y − 11 = 1 − 2y
3y + 2y = 1 + 11
5y = 12
y = 2,4

2(y + 2) = −3(y − 1)
2y + 4 = −3y + 3
2y + 3y = 3 − 4
5y = −1
y = −0,2

y + 4 = 2y − 5
y − 2y = −5 − 4
−y = −9
y = 9

7(y − 3) = −2(y + 3)
7y − 21 = −2y − 6
7y + 2y = −6 + 21
9y = 15
$y=\frac{15}{9}=\frac{5}{3}=1\frac{2}{3}$