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(x+2)+(x+2)=126
We move all terms to the left:
(x+2)+(x+2)-(126)=0
We get rid of parentheses
x+x+2+2-126=0
We add all the numbers together, and all the variables
2x-122=0
We move all terms containing x to the left, all other terms to the right
2x=122
x=122/2
x=61
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