(150-3x)÷4=(150-x)÷8则么做

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(150-3x)÷4=(150-x)÷8则么做
(150-3x)÷4=(150-x)÷8则么做

(150-3x)÷4=(150-x)÷8则么做
交叉相乘 (150-3x)/4=(150-x)/8
(150-3x)=(150-x)/2
(150-3x)*2=(150-x)
300-6x=150-x
-5x=-150
x=30

两边乘8
2(150-3x)=150-x
2×150-2×3x=150-x
6x-x=300-150
5x=150
x=150÷5
x=30

X=30


原式变为
2(150-3x)=150-x
解得x=30

2(150-3x)=150-x
解得x=30

(150-3x)=(150-x)/2
化简得5x=150
x=30

两边都乘8
300-6x=150-x
x=30

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