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en la 11::
(6 + 3) x (8 - 3) = 9 x 5 = 45
(5 + 3) x (7 - 4) = 8 x 3 = 24
(6 + 2) x (9 - 1) = 8 x 8 = 64
en la 12::
(8 x 2) + (4 x 5) = 16 + 20 = 36
(5 x 6) + (3 x 4) = 30 + 12 = 42
(2 x 9) + (7 x 2) = 18 + 14 = 32
(6 + 3) x (8 - 3) = 9 x 5 = 45
(5 + 3) x (7 - 4) = 8 x 3 = 24
(6 + 2) x (9 - 1) = 8 x 8 = 64
en la 12::
(8 x 2) + (4 x 5) = 16 + 20 = 36
(5 x 6) + (3 x 4) = 30 + 12 = 42
(2 x 9) + (7 x 2) = 18 + 14 = 32
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