(2/3)(9a-15)=30

Solution for (2/3)(9a-15)=30 equation:

(2/3)(9a-15)=30

We move all terms to the left:

(2/3)(9a-15)-(30)=0


Domain of the equation: 3)(9a-15)!=0

a∈R


We add all the numbers together, and all the variables

(+2/3)(9a-15)-30=0

We multiply parentheses ..

(+18a^2+2/3*-15)-30=0

We multiply all the terms by the denominator


(+18a^2+2-30*3*-15)=0

We get rid of parentheses

18a^2+2-15-30*3*=0

We add all the numbers together, and all the variables

18a^2=0

a = 18; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·18·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{0}{36}=0$