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4x+7=(x+3)-7
We move all terms to the left:
4x+7-((x+3)-7)=0
We calculate terms in parentheses: -((x+3)-7), so:We get rid of parentheses
(x+3)-7
We get rid of parentheses
x+3-7
We add all the numbers together, and all the variables
x-4
Back to the equation:
-(x-4)
4x-x+4+7=0
We add all the numbers together, and all the variables
3x+11=0
We move all terms containing x to the left, all other terms to the right
3x=-11
x=-11/3
x=-3+2/3
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