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

分类: 作业答案 • 2022-06-23 10:30:11
问题描述：

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

答

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

答

x=180

答

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

答

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

答

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

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