- 2/7
Пошаговое объяснение:
- 3 (2x + 1) - (x - 8) = 7
- 6x - 3 - x + 8 = 7
- 7x + 5 = 7
- 7x = 7 - 5
- 7x = 2
x = - 2/7
x = -2/7
-6x - 3 - x + 8 = 7
-7x + 5 = 7
-7x = 7 - 5
-7x = 2
- 2/7
Пошаговое объяснение:
- 3 (2x + 1) - (x - 8) = 7
- 6x - 3 - x + 8 = 7
- 7x + 5 = 7
- 7x = 7 - 5
- 7x = 2
x = - 2/7
x = -2/7
Пошаговое объяснение:
-6x - 3 - x + 8 = 7
-7x + 5 = 7
-7x = 7 - 5
-7x = 2
x = -2/7