a/4+7=12

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Solution for a/4+7=12 equation: 


a in (-oo:+oo)

a/4+7 = 12 // - 12

a/4-12+7 = 0

1/4*a-5 = 0 // + 5

1/4*a = 5 // : 1/4

a = 5/1/4

a = 20

a = 20

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