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8-3y=2(y+7)/5
We move all terms to the left:
8-3y-(2(y+7)/5)=0
We multiply all the terms by the denominator
-3y*5)-(2(y+7)+8*5)=0
We add all the numbers together, and all the variables
-3y*5)-(2(y+7)=0
Wy multiply elements
-15y^2=0
a = -15; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-15)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$y=\frac{-b}{2a}=\frac{0}{-30}=0$
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