a/2=42

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Solution for a/2=42 equation: 


a in (-oo:+oo)

a/2 = 42 // - 42

a/2-42 = 0

1/2*a-42 = 0 // + 42

1/2*a = 42 // : 1/2

a = 42/1/2

a = 84

a = 84

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