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3.9+10x=8.85
We move all terms to the left:
3.9+10x-(8.85)=0
We add all the numbers together, and all the variables
10x-4.95=0
We move all terms containing x to the left, all other terms to the right
10x=4.95
x=4.95/10
x=1.6779661016949/3.3898305084746
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