8.5x-2.5x=4.2怎么解

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8.5x-2.5x=4.2怎么解8.5x-2.5x=4.2怎么解8.5x-2.5x=4.2怎么解8.5x-2.5x=4.26X=4.2X=0.7(8.5-2.5)x=4.26x=4.2x=4.2÷6x

8.5x-2.5x=4.2怎么解
8.5x-2.5x=4.2
怎么解

8.5x-2.5x=4.2怎么解
8.5x-2.5x=4.2
6X=4.2
X=0.7

(8.5-2.5)x=4.2
6x=4.2
x=4.2÷6
x=0.7