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16-x/2=13
We move all terms to the left:
16-x/2-(13)=0
We add all the numbers together, and all the variables
-x/2+3=0
We multiply all the terms by the denominator
-x+3*2=0
We add all the numbers together, and all the variables
-1x+6=0
We move all terms containing x to the left, all other terms to the right
-x=-6
x=-6/-1
x=+6
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