(4x+7)/(x+1)

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Solution for (4x+7)/(x+1) equation: 


D( x )

x+1 = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

x in (-oo:-1) U (-1:+oo)

(4*x+7)/(x+1) = 0

4*x+7 = 0 // - 7

4*x = -7 // : 4

x = -7/4

x = -7/4

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