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⌠5 -1 2⌡ 5 -1 (4 + 2 + 2) - (-2 + 8 + (-1))
⌠-1 2 -2⌡ -1 2
⌠2 1 1⌡ 2 1 22 – 19 = 3 = 1
⌠1 -1 2⌡ 1 -1 8 – 5 3
⌠1 2 -2⌡ 1 2
Y = ⌠2 7 1⌡ 2 7 (-20 + 14 + (-1)) – (-14 + (-4) + 5)
⌠1 5 2⌡ 1 5 (4 + 2 + 2) - (-2 + 8 + (-1))
⌠1 -1 -2⌡1 -1
⌠2 1 1⌡ 2 1 -7 - (-13) = 6 = 2
⌠1 -1 2⌡ 1 -1 – 5 3
⌠1 2 -2⌡ 1 2