Пошаговое объяснение:
- 4x + 8 = -7
-4x = -7 - 8
-4x = -15
x = -15 / (-4)
x = 3,75
6(9 + 4x) = 4x - 4
54 + 24x = 4x - 4
24x - 4x = -4 - 54
20x = - 58
x = -58 / 20
x = - 2,9
6x - 8(-7 + 9x) = - 2x - 8
6x + 56 - 72x = -2x - 8
6x - 72x + 2x = -8 - 56
-64x = - 64
x = -64 / (-64)
x = 1
1)ответ:1.248
2)ответ:-42
Пошаговое объяснение:
- 4x + 8 = -7
-4x = -7 - 8
-4x = -15
x = -15 / (-4)
x = 3,75
6(9 + 4x) = 4x - 4
54 + 24x = 4x - 4
24x - 4x = -4 - 54
20x = - 58
x = -58 / 20
x = - 2,9
6x - 8(-7 + 9x) = - 2x - 8
6x + 56 - 72x = -2x - 8
6x - 72x + 2x = -8 - 56
-64x = - 64
x = -64 / (-64)
x = 1
1)ответ:1.248
2)ответ:-42