7/(w+1)+3/(3w+3)

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Solution for 7/(w+1)+3/(3w+3) equation: 


D( w )

3*w+3 = 0

w+1 = 0

3*w+3 = 0

3*w+3 = 0

3*w+3 = 0 // - 3

3*w = -3 // : 3

w = -3/3

w = -1

w+1 = 0

w+1 = 0

w+1 = 0 // - 1

w = -1

w in (-oo:-1) U (-1:+oo)

7/(w+1)+3/(3*w+3) = 0

(7*(3*w+3))/((w+1)*(3*w+3))+(3*(w+1))/((w+1)*(3*w+3)) = 0

7*(3*w+3)+3*(w+1) = 0

24*w+24 = 0

(24*w+24)/((w+1)*(3*w+3)) = 0

(24*w+24)/((w+1)*(3*w+3)) = 0 // * (w+1)*(3*w+3)

24*w+24 = 0

24*w+24 = 0 // - 24

24*w = -24 // : 24

w = -24/24

w = -1

w in { -1} 

w belongs to the empty set

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