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-x/3+13=8
We move all terms to the left:
-x/3+13-(8)=0
We add all the numbers together, and all the variables
-x/3+5=0
We multiply all the terms by the denominator
-x+5*3=0
We add all the numbers together, and all the variables
-1x+15=0
We move all terms containing x to the left, all other terms to the right
-x=-15
x=-15/-1
x=+15
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