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.
- 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.
Answers & Comments
Ответ:
Пошаговое объяснение:
1) 4x+5(3-2x)=5-11x
4x+15-10x=5-11x
4x+11x-10x=5-15
5x=-10
x=-2
2) 19-2(3x+8)=2x-37
19-6x-16=2x-37
-6x-2x=-37+16-19
-8x=-40
x=5
3) 8x+3(7-2x)=4x+3
8x+21-6x=4x+3
8x-6x-4x=3-21
-2x=-18
x=9
4) 23-4(3x+8)=1-17x
23-12x-32=1-17x
-12x+17x=1-23+32
5x=10
x=2