15=a/-2 - solution

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Solution for 15=a/-2 equation:

a in (-oo:+oo)

15 = a/(-2) // - a/(-2)

15-(a/(-2)) = 0

1/2*a+15 = 0 // - 15

1/2*a = -15 // : 1/2

a = -15/1/2

a = -30

a = -30

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