Question

-9(8-9x)=4x+5 помогите

Answer 1

$-9(8-9х)=4х+5$
$-72+81х=4х+5$
$77х=77$
$х=1$

Answer 2

-72+81x=4x+5; 81x-4x=5+72; 77x=77; x=77/77=1. Ответ: x=1.