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(5+2x)(2x-3)=(4x+5)(x+1)
We move all terms to the left:
(5+2x)(2x-3)-((4x+5)(x+1))=0
We add all the numbers together, and all the variables
(2x+5)(2x-3)-((4x+5)(x+1))=0
We multiply parentheses ..
(+4x^2-6x+10x-15)-((4x+5)(x+1))=0
We calculate terms in parentheses: -((4x+5)(x+1)), so:We get rid of parentheses
(4x+5)(x+1)
We multiply parentheses ..
(+4x^2+4x+5x+5)
We get rid of parentheses
4x^2+4x+5x+5
We add all the numbers together, and all the variables
4x^2+9x+5
Back to the equation:
-(4x^2+9x+5)
4x^2-4x^2-6x+10x-9x-15-5=0
We add all the numbers together, and all the variables
-5x-20=0
We move all terms containing x to the left, all other terms to the right
-5x=20
x=20/-5
x=-4
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