(2/(x+7))+(15/4)=4

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Solution for (2/(x+7))+(15/4)=4 equation: 


D( x )

x+7 = 0

x+7 = 0

x+7 = 0

x+7 = 0 // - 7

x = -7

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

2/(x+7)+15/4 = 4 // - 4

2/(x+7)+15/4-4 = 0

(2*4)/(4*(x+7))+(15*(x+7))/(4*(x+7))+(-4*4*(x+7))/(4*(x+7)) = 0

15*(x+7)-4*4*(x+7)+2*4 = 0

15*x-16*x-112+113 = 0

1-x = 0

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

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

1-x = 0

1-x = 0 // - 1

-x = -1 // * -1

x = 1

x = 1

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