(a/4)-21=7

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Solution for (a/4)-21=7 equation: 


a in (-oo:+oo)

a/4-21 = 7 // - 7

a/4-21-7 = 0

1/4*a-28 = 0 // + 28

1/4*a = 28 // : 1/4

a = 28/1/4

a = 112

a = 112

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