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)-7+12 = 0

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

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

a = -5/(-1/4)

a = 20

a = 20

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