9/5=27/(y-7)

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Solution for 9/5=27/(y-7) equation: 


D( y )

y-7 = 0

y-7 = 0

y-7 = 0

y-7 = 0 // + 7

y = 7

y in (-oo:7) U (7:+oo)

9/5 = 27/(y-7) // - 27/(y-7)

9/5-(27/(y-7)) = 0

9/5-27*(y-7)^-1 = 0

9/5-27/(y-7) = 0

(-27*5)/(5*(y-7))+(9*(y-7))/(5*(y-7)) = 0

9*(y-7)-27*5 = 0

9*y-198 = 0

(9*y-198)/(5*(y-7)) = 0

(9*y-198)/(5*(y-7)) = 0 // * 5*(y-7)

9*y-198 = 0

9*y-198 = 0 // + 198

9*y = 198 // : 9

y = 198/9

y = 22

y = 22

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