Question

-9(8-9х)=4х+5 решите уравнение

Answer 1

-72+81х=4х+5;
81х-4х=5+72;
77х=77;
х=1.

Answer 2

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