1/4b+1/5b-3=15

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Solution for 1/4b+1/5b-3=15 equation: 


b in (-oo:+oo)

(1/4)*b+(1/5)*b-3 = 15 // - 15

(1/4)*b+(1/5)*b-15-3 = 0

9/20*b-18 = 0 // + 18

9/20*b = 18 // : 9/20

b = 18/9/20

b = 40

b = 40

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