3+x/(x+2)=7/(x+2)

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Solution for 3+x/(x+2)=7/(x+2) equation: 


D( x )

x+2 = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

x in (-oo:-2) U (-2:+oo)

x/(x+2)+3 = 7/(x+2) // - 7/(x+2)

x/(x+2)-(7/(x+2))+3 = 0

x/(x+2)-7*(x+2)^-1+3 = 0

x/(x+2)-7/(x+2)+3 = 0

x/(x+2)-7/(x+2)+(3*(x+2))/(x+2) = 0

3*(x+2)+x-7 = 0

x+3*x-7+6 = 0

4*x-1 = 0

(4*x-1)/(x+2) = 0

(4*x-1)/(x+2) = 0 // * x+2

4*x-1 = 0

4*x-1 = 0 // + 1

4*x = 1 // : 4

x = 1/4

x = 1/4

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