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2)16x-3(4x+7)=6x-(2x+21)
We move all terms to the left:
2)16x-3(4x+7)-(6x-(2x+21))=0
We get rid of parentheses
2)16x-3(4x+7)-(6x-2x-21)=0
We add all the numbers together, and all the variables
2)16x-3(4x+7)-(4x-21)=0
We add all the numbers together, and all the variables
2)16x-3(4x+7)-(4x=0
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