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= (7 - 4) + (1/3 - 3/4)
= 3 + (4/12 - 9/12)
= 2 + (12/12 + 4/12 - 9/12)
= 2 + 7/12
= 2 7/12
cara lain:
bilangan yang lain = 7 1/3 - 4 3/4
= 22/3 -19/4
= 88/12 - 57/12
= 31/12
= 2 7/12
88/12-57-12
31/12 = 2 7/12