5/(x+3)+10=15

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Solution for 5/(x+3)+10=15 equation: 


D( x )

x+3 = 0

x+3 = 0

x+3 = 0

x+3 = 0 // - 3

x = -3

x in (-oo:-3) U (-3:+oo)

5/(x+3)+10 = 15 // - 15

5/(x+3)-15+10 = 0

5/(x+3)+(-15*(x+3))/(x+3)+(10*(x+3))/(x+3) = 0

10*(x+3)-15*(x+3)+5 = 0

10*x-15*x-40+30 = 0

-5*x-10 = 0

(-5*x-10)/(x+3) = 0

(-5*x-10)/(x+3) = 0 // * x+3

-5*x-10 = 0

-5*x-10 = 0 // + 10

-5*x = 10 // : -5

x = 10/(-5)

x = -2

x = -2

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