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12+13=6x-4
We move all terms to the left:
12+13-(6x-4)=0
We add all the numbers together, and all the variables
-(6x-4)+25=0
We get rid of parentheses
-6x+4+25=0
We add all the numbers together, and all the variables
-6x+29=0
We move all terms containing x to the left, all other terms to the right
-6x=-29
x=-29/-6
x=4+5/6
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