7=y/2-3

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Solution for 7=y/2-3 equation: 


y in (-oo:+oo)

7 = y/2-3 // - y/2-3

3-(y/2)+7 = 0

10-1/2*y = 0 // - 10

-1/2*y = -10 // : -1/2

y = -10/(-1/2)

y = 20

y = 20

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