(-7/(u+7))+2=0

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Solution for (-7/(u+7))+2=0 equation: 


D( u )

u+7 = 0

u+7 = 0

u+7 = 0

u+7 = 0 // - 7

u = -7

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

2-7/(u+7) = 0

(2*(u+7))/(u+7)-7/(u+7) = 0

2*(u+7)-7 = 0

2*u+7 = 0

(2*u+7)/(u+7) = 0

(2*u+7)/(u+7) = 0 // * u+7

2*u+7 = 0

2*u+7 = 0 // - 7

2*u = -7 // : 2

u = -7/2

u = -7/2

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