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7(x-5)=9(x-4)
We move all terms to the left:
7(x-5)-(9(x-4))=0
We multiply parentheses
7x-(9(x-4))-35=0
We calculate terms in parentheses: -(9(x-4)), so:We get rid of parentheses
9(x-4)
We multiply parentheses
9x-36
Back to the equation:
-(9x-36)
7x-9x+36-35=0
We add all the numbers together, and all the variables
-2x+1=0
We move all terms containing x to the left, all other terms to the right
-2x=-1
x=-1/-2
x=1/2
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