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12(2x)=15(x+3)
We move all terms to the left:
12(2x)-(15(x+3))=0
We calculate terms in parentheses: -(15(x+3)), so:We get rid of parentheses
15(x+3)
We multiply parentheses
15x+45
Back to the equation:
-(15x+45)
122x-15x-45=0
We add all the numbers together, and all the variables
107x-45=0
We move all terms containing x to the left, all other terms to the right
107x=45
x=45/107
x=45/107
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