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10(x-9)=8(x-5)
We move all terms to the left:
10(x-9)-(8(x-5))=0
We multiply parentheses
10x-(8(x-5))-90=0
We calculate terms in parentheses: -(8(x-5)), so:We get rid of parentheses
8(x-5)
We multiply parentheses
8x-40
Back to the equation:
-(8x-40)
10x-8x+40-90=0
We add all the numbers together, and all the variables
2x-50=0
We move all terms containing x to the left, all other terms to the right
2x=50
x=50/2
x=25
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