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4x-(3x-7)=-28
We move all terms to the left:
4x-(3x-7)-(-28)=0
We add all the numbers together, and all the variables
4x-(3x-7)+28=0
We get rid of parentheses
4x-3x+7+28=0
We add all the numbers together, and all the variables
x+35=0
We move all terms containing x to the left, all other terms to the right
x=-35
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