Решить уравнения: 1) 5(3-2y)-4(9-y)=3(y+5) 2) 14(2x-3)-5(x+4)=2(3x+5)+5x

1)
5 * (3 - 2у) - 4 * (9 - у) = 3 * (у + 5)
15 - 10у - 36 + 4у = 3у + 15
- 21 - 6у = 3у + 15
- 6у - 3у = 15 + 21
- 9у = 36
9у = - 36
у = - 36 : 9
у = - 4
проверка:
5 * (3 - 2 * (- 4)) - 4 * (9 -  (- 4) = 3 * (- 4 + 5)
5 * (3 + 8) - 4 * (9 + 4) = - 12 + 15
5 * 11 - 4 * 13 = 3
55 - 52 = 3
3 = 3

2)
14 * (2x - 3) - 5 * (x + 4) = 2 * (3x + 5) + 5x
28х - 42 - 5х - 20 = 6х + 10 + 5х
23х - 62 = 11х + 10
23х - 11х = 10 + 62
12х = 72
х = 72 : 12
х = 6
проверка:
14 * (2 * 6 - 3) - 5 * (6 + 4) = 2 * (3 * 6 + 5) + 5 * 6
14 * (12 - 3) - 5 * 10 = 2 * (18 + 5) + 30
14 * 9 - 50 = 2 * 23 + 30
126 - 50 = 46 + 30
76 = 76