Question

Решительно плиз -9(8-9х)=4х+5 1-5х=-6х+8

Answer 1

-72 + 81x = 4x + 5
81x - 4x = 5 + 72
77x = 77
x = 77 /77
x = 1

1 - 5x = - 6x + 8
6x - 5x = - 1 + 8
x= 7

Answer 2

81x - 4x = ? (77х)

Answer 3

спасибо!!!