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8 5/10-7 5/12=
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8 (5)/(10) -7 (5)/(12) \\ \\ 8 (1)/(2) -7 (5)/(12) \\ \\ (8 * 2 + 1)/(2) - 7 (5)/(12) \\ \\ (16+1)/(2) - 7 (5)/(12) \\ \\ (17)/(2) - 7(5)/(12) \\ \\ (17)/(2) - (84+5)/(12) \\ \\ (17)/(2) - (89)/(12) \\ \\ LCD = 12 \\ \\ (17 * 6)/(2 * 6) - (89)/(12) \\ \\ (102)/(12) - (89)/(12) \\ \\ (102-89)/(12) \\ \\ (13)/(12) \\ \\ 1(1)/(12) \\ \\ Answer: \fbox {1 1/12} \ or \ \fbox {1.0833}
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