35b/20b-15/20b

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Solution for 35b/20b-15/20b equation: 


b in (-oo:+oo)

((35*b)/20)*b-((15/20)*b) = 0

((35*b)/20)*b+(-3/4)*b = 0

7/4*b^2-3/4*b = 0

DELTA = (-3/4)^2-(0*7/4*4)

DELTA = 9/16

DELTA > 0

b = ((9/16)^(1/2)+3/4)/(7/4*2) or b = (3/4-(9/16)^(1/2))/(7/4*2)

b = 3/7 or b = 0

b in { 0, 3/7 }

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