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-13=4(x-3)+7
We move all terms to the left:
-13-(4(x-3)+7)=0
We calculate terms in parentheses: -(4(x-3)+7), so:We get rid of parentheses
4(x-3)+7
We multiply parentheses
4x-12+7
We add all the numbers together, and all the variables
4x-5
Back to the equation:
-(4x-5)
-4x+5-13=0
We add all the numbers together, and all the variables
-4x-8=0
We move all terms containing x to the left, all other terms to the right
-4x=8
x=8/-4
x=-2
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