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56-x=100/2
We move all terms to the left:
56-x-(100/2)=0
We add all the numbers together, and all the variables
-x+56-50=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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