4/7b=-5/21

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Solution for 4/7b=-5/21 equation: 


b in (-oo:+oo)

(4/7)*b = -5/21 // + -5/21

(4/7)*b-(-5/21) = 0

(4/7)*b+5/21 = 0

4/7*b+5/21 = 0 // - 5/21

4/7*b = -5/21 // : 4/7

b = -5/21/4/7

b = -5/12

b = -5/12

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