7x+9=(109+2x)/2

Solution for 7x+9=(109+2x)/2 equation:

7x+9=(109+2x)/2

We move all terms to the left:

7x+9-((109+2x)/2)=0

We add all the numbers together, and all the variables

7x-((2x+109)/2)+9=0

We multiply all the terms by the denominator


7x*2)-((2x+109)+9*2)=0

We add all the numbers together, and all the variables

7x*2)-((2x+109)=0

Wy multiply elements

14x^2=0

a = 14; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·14·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{28}=0$