b/7=21

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Solution for b/7=21 equation: 


b in (-oo:+oo)

b/7 = 21 // - 21

b/7-21 = 0

1/7*b-21 = 0 // + 21

1/7*b = 21 // : 1/7

b = 21/1/7

b = 147

b = 147

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