Помогите решить уравнения: 1) 5 х = (7+8+4 х) = 56 2) 12+3 х-2 х-7=29 3) 4 х + (15-3 х) - 12=26

1) 5 х - (7 + 8 + 4 х) = 56

5x - 7 - 8 - 4x = 56

5x - 4x = 56 + 8 + 7

x = 71

2) 12 + 3x - 2x - 7 = 29

3x - 2x = 29 - 12 + 7

x = 24

3) 4x + (15 - 3x) - 12 = 26

4x + 15 - 3x - 12 = 26

4x - 3x = 26 - 15 + 12

x = 23