Уравнения (8×+91):7=21

Question

Уравнения (8×+91):7=21

Answer 1

8х+91=21*7
8х+91=147
8х=147-91
8х=56
х=56:8
х=7

Answer 2

(8Х / 91) =  21*7
8х + 91 = 147
8х = 147 - 91
8х=56
х=56 / 8 = 7