(x-100)*4=3x+100怎么解呀?

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(x-100)*4=3x+100怎么解呀?
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(x-100)*4=3x+100怎么解呀?
(x-100)*4=3x+100怎么解呀?

(x-100)*4=3x+100怎么解呀?
(x-100)*4=3x+100
4x-400=3x+100
x=500

您可以使用“移项”,即
4x-100x=3x+100

4x-400=3x+100
4x-3x=100+400
x=500