5/9=6/(a+7)

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Solution for 5/9=6/(a+7) equation: 


D( a )

a+7 = 0

a+7 = 0

a+7 = 0

a+7 = 0 // - 7

a = -7

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

5/9 = 6/(a+7) // - 6/(a+7)

5/9-(6/(a+7)) = 0

5/9-6*(a+7)^-1 = 0

5/9-6/(a+7) = 0

(-6*9)/(9*(a+7))+(5*(a+7))/(9*(a+7)) = 0

5*(a+7)-6*9 = 0

5*a-19 = 0

(5*a-19)/(9*(a+7)) = 0

(5*a-19)/(9*(a+7)) = 0 // * 9*(a+7)

5*a-19 = 0

5*a-19 = 0 // + 19

5*a = 19 // : 5

a = 19/5

a = 19/5

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