1) 7(x + 4) = −28
7х + 28 = - 28
7х = - 28 - 28
х = - 56: 7
х = 8
2) 35 = −5(2x − 1)
35 = - 10х + 5
10х = 5 - 35
10х = - 30
х = -3
3) 9(−3x + 12) = 81
- 27х + 108 = 81
- 27х = 81 - 108
- 27х = - 27
х = 1
