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9(x+2)=7x+2x+18
We move all terms to the left:
9(x+2)-(7x+2x+18)=0
We add all the numbers together, and all the variables
9(x+2)-(9x+18)=0
We multiply parentheses
9x-(9x+18)+18=0
We get rid of parentheses
9x-9x-18+18=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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