4x一15=x+9求解

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 改租运核梁型亏

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4x—15=x+9
4x=x+9+15
4x=x+24
4x-x=24
(4-1)x=24
3x=24
x=24÷3
x=8

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 答世侍清吵返庆

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4x-15=10
4x =10+15
4x =25
x=6.25

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 宽盯帆慎雹则蠢

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