x-30=4(x/2)-30

Solution for x-30=4(x/2)-30 equation:

x-30=4(x/2)-30

We move all terms to the left:

x-30-(4(x/2)-30)=0

We add all the numbers together, and all the variables

x-(4(+x/2)-30)-30=0

We multiply all the terms by the denominator


x*2)-30)-(4(+x-30*2)-30)=0

We add all the numbers together, and all the variables

x*2)-30)-(4(x-60)-30)=0

We add all the numbers together, and all the variables

x*2)-30)-(4(x=0

Wy multiply elements

2x^2=0

a = 2; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·2·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{4}=0$