Question

793. Решите уравнения:
- 1) 4х + 5(3 – 2x) = 5 – 11x;
2) 19 – 2(3х + 8) = 2х – 37;
3) 8х + 3(7 - 2x) = 4х + 3;
4) 23 – 4(3х +8) = 1 - 17х.

Answer 1

Ответ:

1)

4x+15-10x=5-11x

4x-10x+11x=5-15

5x=19

x=2

2)

19-8x-16=2x-37

-6x-2x=-37+16-13

-8x=-8 |-1

x=1

3)

8x+21-6x=4x+3

8x-6x-4x=3-21

-2x=-18 |-1

x=9

4)

23-12x-24=1-17x

12x+17x=1-24-23

5x=-46

x=-9.2