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54=(40x+1200)/x
We move all terms to the left:
54-((40x+1200)/x)=0
Domain of the equation: x)!=0We multiply all the terms by the denominator
x!=0/1
x!=0
x∈R
-((40x+1200)+54*x)=0
We calculate terms in parentheses: -((40x+1200)+54*x), so:We get rid of parentheses
(40x+1200)+54*x
We add all the numbers together, and all the variables
54x+(40x+1200)
We get rid of parentheses
54x+40x+1200
We add all the numbers together, and all the variables
94x+1200
Back to the equation:
-(94x+1200)
-94x-1200=0
We move all terms containing x to the left, all other terms to the right
-94x=1200
x=1200/-94
x=-12+36/47
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