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84=-x+43(2)
We move all terms to the left:
84-(-x+43(2))=0
We add all the numbers together, and all the variables
-(-1x+432)+84=0
We get rid of parentheses
1x-432+84=0
We add all the numbers together, and all the variables
x-348=0
We move all terms containing x to the left, all other terms to the right
x=348
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