(2)/(j+3)=(4)/(5)

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Solution for (2)/(j+3)=(4)/(5) equation: 


D( j )

j+3 = 0

j+3 = 0

j+3 = 0

j+3 = 0 // - 3

j = -3

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

2/(j+3) = 4/5 // - 4/5

2/(j+3)-(4/5) = 0

2/(j+3)-4/5 = 0

(2*5)/(5*(j+3))+(-4*(j+3))/(5*(j+3)) = 0

2*5-4*(j+3) = 0

-4*j-2 = 0

(-4*j-2)/(5*(j+3)) = 0

(-4*j-2)/(5*(j+3)) = 0 // * 5*(j+3)

-4*j-2 = 0

-4*j-2 = 0 // + 2

-4*j = 2 // : -4

j = 2/(-4)

j = -1/2

j = -1/2

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