A/7=21

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Solution for A/7=21 equation: 


A in (-oo:+oo)

A/7 = 21 // - 21

A/7-21 = 0

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

1/7*A = 21 // : 1/7

A = 21/1/7

A = 147

A = 147

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