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35(3x-7)=21(12x+4)
We move all terms to the left:
35(3x-7)-(21(12x+4))=0
We multiply parentheses
105x-(21(12x+4))-245=0
We calculate terms in parentheses: -(21(12x+4)), so:We get rid of parentheses
21(12x+4)
We multiply parentheses
252x+84
Back to the equation:
-(252x+84)
105x-252x-84-245=0
We add all the numbers together, and all the variables
-147x-329=0
We move all terms containing x to the left, all other terms to the right
-147x=329
x=329/-147
x=-2+5/21
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