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66(7+x)=122
We move all terms to the left:
66(7+x)-(122)=0
We add all the numbers together, and all the variables
66(x+7)-122=0
We multiply parentheses
66x+462-122=0
We add all the numbers together, and all the variables
66x+340=0
We move all terms containing x to the left, all other terms to the right
66x=-340
x=-340/66
x=-5+5/33
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