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(7+x)^+(7-x)^=130
We move all terms to the left:
(7+x)^+(7-x)^-(130)=0
We add all the numbers together, and all the variables
(x+7)^+(-1x+7)^-130=0
We move all terms containing x to the left, all other terms to the right
(x+7)^+(-1x+7)^=130
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