A(x)=(18+0.15x)/x

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Solution for A(x)=(18+0.15x)/x equation: 



(A)=(18+0.15A)/A

We move all terms to the left:

(A)-((18+0.15A)/A)=0



Domain of the equation: A)!=0

A!=0/1

A!=0

A∈R



We add all the numbers together, and all the variables

A-((0.15A+18)/A)=0

We multiply all the terms by the denominator


A*A)-((0.15A+18)=0

Wy multiply elements

A^2=0

a = 1; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·1·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$A=\frac{-b}{2a}=\frac{0}{2}=0$

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