3; 2
Пошаговое объяснение:
2х + 3х - 18 = x- 7x + 15
2x + 3x - x + 7x = 15 + 18
11x = 33
x = 33:11
x = 3
4x + 5x - 3 = 2x + 11
4x + 5x - 2x = 11 + 3
7x = 14
x = 14:7
x = 2
1) x=3,-3
2) x=2,-2
3; 2
Пошаговое объяснение:
2х + 3х - 18 = x- 7x + 15
2x + 3x - x + 7x = 15 + 18
11x = 33
x = 33:11
x = 3
4x + 5x - 3 = 2x + 11
4x + 5x - 2x = 11 + 3
7x = 14
x = 14:7
x = 2
1) x=3,-3
2) x=2,-2