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9(2x-1)=4(5x-4)
We move all terms to the left:
9(2x-1)-(4(5x-4))=0
We multiply parentheses
18x-(4(5x-4))-9=0
We calculate terms in parentheses: -(4(5x-4)), so:We get rid of parentheses
4(5x-4)
We multiply parentheses
20x-16
Back to the equation:
-(20x-16)
18x-20x+16-9=0
We add all the numbers together, and all the variables
-2x+7=0
We move all terms containing x to the left, all other terms to the right
-2x=-7
x=-7/-2
x=3+1/2
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