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(1/5)y-5=y-7
We move all terms to the left:
(1/5)y-5-(y-7)=0
Domain of the equation: 5)y!=0We add all the numbers together, and all the variables
y!=0/1
y!=0
y∈R
(+1/5)y-(y-7)-5=0
We multiply parentheses
y^2-(y-7)-5=0
We get rid of parentheses
y^2-y+7-5=0
We add all the numbers together, and all the variables
y^2-1y+2=0
a = 1; b = -1; c = +2;
Δ = b2-4ac
Δ = -12-4·1·2
Δ = -7
Delta is less than zero, so there is no solution for the equation
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