Question

Решите уравнения:
а)-5(5-х)-4х=18

б)13(3х-6)-27(7х-21)=9

Answer 1

- 5( 5 - Х ) - 4х = 18
- 25 + 5х - 4х = 18
Х = 18 + 25
Х = 43
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1/3( 3х - 6 ) - 2/7( 7х - 21 ) = 9
Х - 2 - 2х + 6 = 9
- Х = 9 - 4
Х = - 5