30/(2b+5)+12b/(2b+5)

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Solution for 30/(2b+5)+12b/(2b+5) equation: 


D( b )

2*b+5 = 0

2*b+5 = 0

2*b+5 = 0

2*b+5 = 0 // - 5

2*b = -5 // : 2

b = -5/2

b in (-oo:-5/2) U (-5/2:+oo)

30/(2*b+5)+(12*b)/(2*b+5) = 0

12*b+30 = 0

(12*b+30)/(2*b+5) = 0

(12*b+30)/(2*b+5) = 0 // * 2*b+5

12*b+30 = 0

12*b+30 = 0 // - 30

12*b = -30 // : 12

b = -30/12

b = -5/2

b in { -5/2} 

b belongs to the empty set

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