15((171-12y)/15)+12y+9=180

Solution for 15((171-12y)/15)+12y+9=180 equation:

15((171-12y)/15)+12y+9=180

We move all terms to the left:

15((171-12y)/15)+12y+9-(180)=0

We add all the numbers together, and all the variables

15((-12y+171)/15)+12y+9-180=0

We add all the numbers together, and all the variables

12y+15((-12y+171)/15)-171=0

We multiply all the terms by the denominator


12y*15)+15((-12y+171)-171*15)=0

We add all the numbers together, and all the variables

12y*15)+15((-12y+171)=0

Wy multiply elements

180y^2=0

a = 180; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·180·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$y=\frac{-b}{2a}=\frac{0}{360}=0$