3b/9=7

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Solution for 3b/9=7 equation: 


b in (-oo:+oo)

(3*b)/9 = 7 // - 7

(3*b)/9-7 = 0

1/3*b-7 = 0 // + 7

1/3*b = 7 // : 1/3

b = 7/1/3

b = 21

b = 21

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