Question

решите уравнение
3x-10 равно5x+2(4 x+5)​

Answer 1

Пошаговое объяснение:

$3x - 10 = 5x + 2(4x + 5) \\ 3x - 10 = 5x + 8x + 10 \\ 3x - 10 = 13x + 10 \\ 3x - 13x = 10 + 10 \\ - 10x = 10 + 10 \\ - 10x = 20 \div ( - 10) \\ x = - 2$

Answer 2

3х - 10 = 5х + 2 ( 4х + 5 )

3х - 10 = 5х + 8х + 10

- 10 - 10 = 5х + 8х - 3х

- 20 = 10 х

х = - 20 : 10

х = -2