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2x+4=-7(x+7/9)
We move all terms to the left:
2x+4-(-7(x+7/9))=0
We add all the numbers together, and all the variables
2x-(-7(+x+7/9))+4=0
We multiply all the terms by the denominator
2x*9))-(-7(+x+7+4*9))=0
We add all the numbers together, and all the variables
2x*9))-(-7(x+43))=0
We add all the numbers together, and all the variables
2x*9))-(-7(x=0
Wy multiply elements
18x^2=0
a = 18; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·18·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{36}=0$
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