x=((100-x)/0.4)

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Solution for x=((100-x)/0.4) equation: 



x=((100-x)/0.4)

We move all terms to the left:

x-(((100-x)/0.4))=0

We add all the numbers together, and all the variables

x-(((-1x+100)/0.4))=0

We multiply all the terms by the denominator


x*0.4))-(((-1x+100)=0

Wy multiply elements

0x^2=0

We add all the numbers together, and all the variables

x^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:
$x=\frac{-b}{2a}=\frac{0}{2}=0$

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