21/8=5b+7b+5/8

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Solution for 21/8=5b+7b+5/8 equation: 


b in (-oo:+oo)

21/8 = 5*b+7*b+5/8 // - 5*b+7*b+5/8

21/8-(5*b)-(7*b)-(5/8) = 0

21/8-5*b-7*b-5/8 = 0

2-12*b = 0 // - 2

-12*b = -2 // : -12

b = -2/(-12)

b = 1/6

b = 1/6

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