70/1.4x+15=70/x

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Solution for 70/1.4x+15=70/x equation: 



70/1.4x+15=70/x

We move all terms to the left:

70/1.4x+15-(70/x)=0



Domain of the equation: 1.4x!=0

x!=0/1.4

x!=0

x∈R





Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

70/1.4x-(+70/x)+15=0

We get rid of parentheses

70/1.4x-70/x+15=0

We calculate fractions


70x/(1.4x*x)+(-70x)/(1.4x*x)+15=0

We add all the numbers together, and all the variables

70x/(+1.4x*x)+(-70x)/(+1.4x*x)+15=0

We multiply all the terms by the denominator


70x+(-70x)+15*(+1.4x*x)=0

We multiply parentheses

15x^2+70x+(-70x)=0

We get rid of parentheses

15x^2+70x-70x=0

We add all the numbers together, and all the variables

15x^2=0

a = 15; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·15·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{30}=0$

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