Question

Найдите произведение корней уравнения |7-5х|=13

Answer 1

Ответ:

$7 - 5x = 13 \\ - 5x = 13 - 7 \\ - 5x = 6 \\ x = \frac{ 6}{ - 5} \\ x = - \frac{6}{5} \\ x = - 1 \frac{1}{5} \\ - 7 + 5x = 13 \\ 5x = 13 + 7 \\ 5x = 20 \\ x = \frac{20}{5} \\ x = 4$