Question

Найти корень уравнения -8х+4(7+8х)=4х+7

Answer 1

$- 8x + 4(7 + 8x) = 4x + 7 \\ - 8x + 28 + 32x = 4x + 7 \\ - 8x + 32x - 4x = 7 - 28 \\ 20x = - 21 \\ x = ( - 21) \div 20 \\ x = - 1.05.$
Ответ : х = -1,05.

Удачи))))

Answer 2

$- 8x + 4(7 + 8x) = 4x + 7 \\ \\ - 8x + 28 + 32x = 4x + 7 \\ \\ 24x + 28 = 4x + 7 \\ \\ 24x - 4x = 7 - 28 \\ \\ 20x = - 21 \\ \\ x = - \frac{21}{20} = - 1 \frac{1}{20}$