X-13=(2x/7)

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Solution for X-13=(2x/7) equation: 



X-13=(2X/7)

We move all terms to the left:

X-13-((2X/7))=0

We add all the numbers together, and all the variables

X-((+2X/7))-13=0

We multiply all the terms by the denominator


X*7))-((+2X-13*7))=0

We add all the numbers together, and all the variables

X*7))-((2X-91))=0

We add all the numbers together, and all the variables

X*7))-((2X=0

Wy multiply elements

7X^2=0

a = 7; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·7·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$X=\frac{-b}{2a}=\frac{0}{14}=0$

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