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5x+18+4x=18+9x
We move all terms to the left:
5x+18+4x-(18+9x)=0
We add all the numbers together, and all the variables
5x+4x-(9x+18)+18=0
We add all the numbers together, and all the variables
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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