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(x+4)(x+9)/2(x-4)=99
We move all terms to the left:
(x+4)(x+9)/2(x-4)-(99)=0
Domain of the equation: 2(x-4)!=0We multiply parentheses ..
x∈R
(+x^2+9x+4x+36)/2(x-4)-99=0
We multiply all the terms by the denominator
(+x^2+9x+4x+36)-99*2(x-4)=0
Wy multiply elements
(+x^2+9x+4x+36)-198x(x=0
We get rid of parentheses
x^2+9x+4x-198x(x+36=0
We add all the numbers together, and all the variables
x^2+13x-198x(x+36=0
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