75=(1/2)(x-30)

Solution for 75=(1/2)(x-30) equation:

75=(1/2)(x-30)

We move all terms to the left:

75-((1/2)(x-30))=0


Domain of the equation: 2)(x-30))!=0

x∈R


We add all the numbers together, and all the variables

-((+1/2)(x-30))+75=0

We multiply parentheses ..

-((+x^2+1/2*-30))+75=0

We multiply all the terms by the denominator


-((+x^2+1+75*2*-30))=0


We calculate terms in parentheses: -((+x^2+1+75*2*-30)), so:

(+x^2+1+75*2*-30)

We get rid of parentheses

x^2+1-30+75*2*

We add all the numbers together, and all the variables

x^2

Back to the equation:

-(x^2)


We add all the numbers together, and all the variables

-1x^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:
$x=\frac{-b}{2a}=\frac{0}{-2}=0$