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2014-06-07T22:32:22+03:00
Xr = (Xp + Xq) / 2
3 = (1 + Xq) / 2
1 + Xq = 3 * 2
Xq = 6 - 1
Xq = 5

Yr = (Yp + Yq) / 2
3 = (3 + Yq) / 2
3 + Yq = 3 * 2
Yq = 6 - 3 
Yq = 3

⇒Q (5 , 3)