Question

СРОЧНО!!!!!
Помогите быстро прошу только распишите

Answer 1

Ответ:

$10x - 8 = 0 \\ 10x = 8 \\ x = \frac{8}{10} = 0.8 \\ 8x - 5 = 10x \\ 8x - 10x = 5 \\ - 2x = 5 \\ x = - \frac{5}{2} = - 2.5 \\ 9 = 5(x + 9) \\ 5x + 45 = 9 \\ 5x = 9 - 45 \\ 5x = - 36 \\ x = - \frac{36}{5} = - 7 \frac{1}{5} = - 7.2 \\ 7( - 3 + 2x) = - 6x - 1 \\ - 21 - 14x = - 6x - 1 \\ - 14x + 6x = - 1 + 21 \\ - 8x = 20 \\ x = - \frac{20}{8} = - \frac{5}{2} = - 2.5$