7-a/4=28

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Solution for 7-a/4=28 equation: 


a in (-oo:+oo)

7-(a/4) = 28 // - 28

7-(a/4)-28 = 0

-1/4*a-21 = 0 // + 21

-1/4*a = 21 // : -1/4

a = 21/(-1/4)

a = -84

a = -84

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