42/4a=4

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Solution for 42/4a=4 equation: 


a in (-oo:+oo)

(42/4)*a = 4 // - 4

(42/4)*a-4 = 0

21/2*a-4 = 0 // + 4

21/2*a = 4 // : 21/2

a = 4/21/2

a = 8/21

a = 8/21

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