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-5=-13-x
We move all terms to the left:
-5-(-13-x)=0
We add all the numbers together, and all the variables
-(-1x-13)-5=0
We get rid of parentheses
1x+13-5=0
We add all the numbers together, and all the variables
x+8=0
We move all terms containing x to the left, all other terms to the right
x=-8
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