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15+12x=3(4x+5)
We move all terms to the left:
15+12x-(3(4x+5))=0
We calculate terms in parentheses: -(3(4x+5)), so:We get rid of parentheses
3(4x+5)
We multiply parentheses
12x+15
Back to the equation:
-(12x+15)
12x-12x-15+15=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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