Question

Решить уравнение -8(3+х)+х=4; -6(1-х)+4х=-4; -5(-1+9х)-5=-1;-9(8-х)-4х-5=-1

Answer 1

1. - 24 - 8x + x = 4
- 7x = 28
x = - 4
2. - 6 + 6x + 4x = -4
10x = 2
x = 0,2
3. 5 - 45x - 5 = - 1
- 45x = -1
x = 1/45
4. - 72 + 9x - 4x - 5 = - 1
5x = 76
x = 76/5 = 15,2