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6x+3(4x-7)=11x+21+7x
We move all terms to the left:
6x+3(4x-7)-(11x+21+7x)=0
We add all the numbers together, and all the variables
6x+3(4x-7)-(18x+21)=0
We multiply parentheses
6x+12x-(18x+21)-21=0
We get rid of parentheses
6x+12x-18x-21-21=0
We add all the numbers together, and all the variables
-42!=0
There is no solution for this equation
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