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4x-7=5(4x+5)
We move all terms to the left:
4x-7-(5(4x+5))=0
We calculate terms in parentheses: -(5(4x+5)), so:We get rid of parentheses
5(4x+5)
We multiply parentheses
20x+25
Back to the equation:
-(20x+25)
4x-20x-25-7=0
We add all the numbers together, and all the variables
-16x-32=0
We move all terms containing x to the left, all other terms to the right
-16x=32
x=32/-16
x=-2
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