X*9=130+140= x:8=200-120= 164-x=720:9= помогите

Question

X*9=130+140= x:8=200-120= 164-x=720:9= помогите

Answer 1

Х9=270. х:8=80
х=30. х=80:8=10
х=10
164-х=80
х=164-80=84
х=84