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-13=12x/4
We move all terms to the left:
-13-(12x/4)=0
We add all the numbers together, and all the variables
-(+12x/4)-13=0
We get rid of parentheses
-12x/4-13=0
We multiply all the terms by the denominator
-12x-13*4=0
We add all the numbers together, and all the variables
-12x-52=0
We move all terms containing x to the left, all other terms to the right
-12x=52
x=52/-12
x=-4+1/3
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