12.5=3.5+4x

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Solution for 12.5=3.5+4x equation: 



12.5=3.5+4x

We move all terms to the left:

12.5-(3.5+4x)=0

We add all the numbers together, and all the variables

-(4x+3.5)+12.5=0

We get rid of parentheses

-4x-3.5+12.5=0

We add all the numbers together, and all the variables

-4x+9=0

We move all terms containing x to the left, all other terms to the right

-4x=-9

x=-9/-4

x=2+1/4

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