x=1000-(x/100*15)

Solution for x=1000-(x/100*15) equation:

x=1000-(x/100*15)

We move all terms to the left:

x-(1000-(x/100*15))=0

We add all the numbers together, and all the variables

x-(1000-(+x/100*15))=0

We multiply all the terms by the denominator


x*100*15))-(1000-(+x=0

We add all the numbers together, and all the variables

x+x*100*15))-(1000-(=0

Wy multiply elements

1500x^2*1+x=0

Wy multiply elements

1500x^2+x=0

a = 1500; b = 1; c = 0;
Δ = b2-4ac
Δ = 12-4·1500·0
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1}=1$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-1}{2*1500}=\frac{-2}{3000}
=-1/1500
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+1}{2*1500}=\frac{0}{3000}
=0
$