1/2b=21

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Solution for 1/2b=21 equation: 


b in (-oo:+oo)

(1/2)*b = 21 // - 21

(1/2)*b-21 = 0

1/2*b-21 = 0 // + 21

1/2*b = 21 // : 1/2

b = 21/1/2

b = 42

b = 42

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