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3.5-10x=12.7
We move all terms to the left:
3.5-10x-(12.7)=0
We add all the numbers together, and all the variables
-10x-9.2=0
We move all terms containing x to the left, all other terms to the right
-10x=9.2
x=9.2/-10
x=-7.6666666666667/8.3333333333333
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