Question

Решите уравнение -7=5(x+5)

Answer 1

5(х+5)=-7
5х+25=-7
5х=-7-25
5х=-32
х=-32:5=-6.4

Покрок

Answer 2

$\displaystyle -7=5(x+5)\\-7=5x+25\\-5x=25+7\\-5x=32\\\\x=-\frac{32}{5}=-6\frac{2}{5}=-6,4$