1/4b-21/5=4/5

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Solution for 1/4b-21/5=4/5 equation: 


b in (-oo:+oo)

(1/4)*b-(21/5) = 4/5 // - 4/5

(1/4)*b-(21/5)-(4/5) = 0

(1/4)*b-21/5-4/5 = 0

1/4*b-5 = 0 // + 5

1/4*b = 5 // : 1/4

b = 5/1/4

b = 20

b = 20

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