((55-a+15)/4)=a

Solution for ((55-a+15)/4)=a equation:

((55-a+15)/4)=a

We move all terms to the left:

((55-a+15)/4)-(a)=0

We add all the numbers together, and all the variables

((-1a+70)/4)-a=0

We add all the numbers together, and all the variables

-1a+((-1a+70)/4)=0

We multiply all the terms by the denominator


-1a*4)+((-1a+70)=0

Wy multiply elements

-4a^2=0

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

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{0}{-8}=0$