9y/2y+1=9

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Solution for 9y/2y+1=9 equation: 


y in (-oo:+oo)

((9*y)/2)*y+1 = 9 // - 9

((9*y)/2)*y-9+1 = 0

9/2*y^2 = 8 // : 9/2

y^2 = 16/9

y^2 = 16/9 // ^ 1/2

abs(y) = 4/3

y = 4/3 or y = -4/3

y in { 4/3, -4/3 }

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