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7=-x+209
We move all terms to the left:
7-(-x+209)=0
We add all the numbers together, and all the variables
-(-1x+209)+7=0
We get rid of parentheses
1x-209+7=0
We add all the numbers together, and all the variables
x-202=0
We move all terms containing x to the left, all other terms to the right
x=202
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