(c+1)/(c-2)=4/7

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Solution for (c+1)/(c-2)=4/7 equation: 


D( c )

c-2 = 0

c-2 = 0

c-2 = 0

c-2 = 0 // + 2

c = 2

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

(c+1)/(c-2) = 4/7 // - 4/7

(c+1)/(c-2)-(4/7) = 0

(c+1)/(c-2)-4/7 = 0

(7*(c+1))/(7*(c-2))+(-4*(c-2))/(7*(c-2)) = 0

7*(c+1)-4*(c-2) = 0

3*c+15 = 0

(3*c+15)/(7*(c-2)) = 0

(3*c+15)/(7*(c-2)) = 0 // * 7*(c-2)

3*c+15 = 0

3*c+15 = 0 // - 15

3*c = -15 // : 3

c = -15/3

c = -5

c = -5

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