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5x-7=4(x+2)
We move all terms to the left:
5x-7-(4(x+2))=0
We calculate terms in parentheses: -(4(x+2)), so:We get rid of parentheses
4(x+2)
We multiply parentheses
4x+8
Back to the equation:
-(4x+8)
5x-4x-8-7=0
We add all the numbers together, and all the variables
x-15=0
We move all terms containing x to the left, all other terms to the right
x=15
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