Question

-9(8-9х)=4х+5

пожалуйста

Answer 1

-9(8-9х)=4х+5 -9*8 -9*(-9х)-4х=5 -72+81х-4х=5 х(81-4)=5+72 77х=79 х=79/77=1 2/77

Answer 2

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