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3(x+9)=5(4+9)
We move all terms to the left:
3(x+9)-(5(4+9))=0
We add all the numbers together, and all the variables
3(x+9)-(513)=0
We add all the numbers together, and all the variables
3(x+9)-513=0
We multiply parentheses
3x+27-513=0
We add all the numbers together, and all the variables
3x-486=0
We move all terms containing x to the left, all other terms to the right
3x=486
x=486/3
x=162
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