150-3x-30=(150-3x-30)/1.2

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Solution for 150-3x-30=(150-3x-30)/1.2 equation: 



150-3x-30=(150-3x-30)/1.2

We move all terms to the left:

150-3x-30-((150-3x-30)/1.2)=0

We add all the numbers together, and all the variables

-3x-((-3x+120)/1.2)+150-30=0

We add all the numbers together, and all the variables

-3x-((-3x+120)/1.2)+120=0

We multiply all the terms by the denominator


-3x*1.2)-((-3x+120)+120*1.2)=0

We add all the numbers together, and all the variables

-3x*1.2)-((-3x+120)=0

Wy multiply elements

-3x^2=0

a = -3; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-3)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-6}=0$

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