-1/2y=20 - solution

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Solution for -1/2y=20 equation:

y in (-oo:+oo)

(-1/2)*y = 20 // - 20

(-1/2)*y-20 = 0

-1/2*y-20 = 0 // + 20

-1/2*y = 20 // : -1/2

y = 20/(-1/2)

y = -40

y = -40

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