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-4x-23=-7(x+2)
We move all terms to the left:
-4x-23-(-7(x+2))=0
We calculate terms in parentheses: -(-7(x+2)), so:We get rid of parentheses
-7(x+2)
We multiply parentheses
-7x-14
Back to the equation:
-(-7x-14)
-4x+7x+14-23=0
We add all the numbers together, and all the variables
3x-9=0
We move all terms containing x to the left, all other terms to the right
3x=9
x=9/3
x=3
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