X+21=(1/2)x+13

Solution for X+21=(1/2)x+13 equation:

X+21=(1/2)X+13

We move all terms to the left:

X+21-((1/2)X+13)=0


Domain of the equation: 2)X+13)!=0

X!=0/1

X!=0

X∈R


We add all the numbers together, and all the variables

X-((+1/2)X+13)+21=0

We multiply all the terms by the denominator


X*2)X+13)-((+21*2)X+13)+1=0

We add all the numbers together, and all the variables

X*2)X+13)-(42X+13)+1=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:
$X=\frac{-b}{2a}=\frac{0}{4}=0$