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5x-(12+x)=(-13)
We move all terms to the left:
5x-(12+x)-((-13))=0
We add all the numbers together, and all the variables
5x-(x+12)-((-13))=0
We add all the numbers together, and all the variables
5x-(x+12)+13=0
We get rid of parentheses
5x-x-12+13=0
We add all the numbers together, and all the variables
4x+1=0
We move all terms containing x to the left, all other terms to the right
4x=-1
x=-1/4
x=-1/4
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