a/3+17=21

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Solution for a/3+17=21 equation: 


a in (-oo:+oo)

a/3+17 = 21 // - 21

a/3-21+17 = 0

1/3*a-4 = 0 // + 4

1/3*a = 4 // : 1/3

a = 4/1/3

a = 12

a = 12

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