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51=-x/4
We move all terms to the left:
51-(-x/4)=0
We get rid of parentheses
x/4+51=0
We multiply all the terms by the denominator
x+51*4=0
We add all the numbers together, and all the variables
x+204=0
We move all terms containing x to the left, all other terms to the right
x=-204
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