3(x-120)-(x-120)=120?

问题描述:

3(x-120)-(x-120)=120?

3(x-120)-(x-120)=120
2x-240=120
2x=360
x=180

x=180

3(x-120)-(x-120)的结果是2(x-120)
∴3(x-120)-(x-120)=120,即2(x-120)=120,∴x-120=60,∴x=120+60,∴x=180

3(x-120)-(x-120)=120
2(x-120)=120
x-120=60
x=180

3(x-120)-(x-120)=120
2(x-120)=120
x-120=60
x=180