-15x-15=5(x+7)/2

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Solution for -15x-15=5(x+7)/2 equation: 



-15x-15=5(x+7)/2

We move all terms to the left:

-15x-15-(5(x+7)/2)=0

We multiply all the terms by the denominator


-15x*2)-(5(x+7)-15*2)=0

We add all the numbers together, and all the variables

-15x*2)-(5(x+7)=0

Wy multiply elements

-30x^2=0

a = -30; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-30)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-60}=0$

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