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-40/(x-9)=8
We move all terms to the left:
-40/(x-9)-(8)=0
Domain of the equation: (x-9)!=0We multiply all the terms by the denominator
We move all terms containing x to the left, all other terms to the right
x!=9
x∈R
-8*(x-9)-40=0
We multiply parentheses
-8x+72-40=0
We add all the numbers together, and all the variables
-8x+32=0
We move all terms containing x to the left, all other terms to the right
-8x=-32
x=-32/-8
x=+4
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