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6(x+3)=3(21+6)
We move all terms to the left:
6(x+3)-(3(21+6))=0
We add all the numbers together, and all the variables
6(x+3)-(327)=0
We add all the numbers together, and all the variables
6(x+3)-327=0
We multiply parentheses
6x+18-327=0
We add all the numbers together, and all the variables
6x-309=0
We move all terms containing x to the left, all other terms to the right
6x=309
x=309/6
x=51+1/2
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