9x+7((135-3x)/5)=279

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Solution for 9x+7((135-3x)/5)=279 equation: 



9x+7((135-3x)/5)=279

We move all terms to the left:

9x+7((135-3x)/5)-(279)=0

We add all the numbers together, and all the variables

9x+7((-3x+135)/5)-279=0

We multiply all the terms by the denominator


9x*5)+7((-3x+135)-279*5)=0

We add all the numbers together, and all the variables

9x*5)+7((-3x+135)=0

Wy multiply elements

45x^2=0

a = 45; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·45·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{90}=0$

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