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(9-y)+7=7+(y/9)
We move all terms to the left:
(9-y)+7-(7+(y/9))=0
We add all the numbers together, and all the variables
(-1y+9)-(7+(+y/9))+7=0
We get rid of parentheses
-1y-(7+(+y/9))+9+7=0
We multiply all the terms by the denominator
-1y*9))-(7+(+y+9*9))+7*9))=0
We add all the numbers together, and all the variables
-1y*9))-(7+(y+81))+7*9))=0
We add all the numbers together, and all the variables
-1y*9))-(7+(y=0
Wy multiply elements
-9y^2=0
a = -9; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-9)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$y=\frac{-b}{2a}=\frac{0}{-18}=0$
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