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= 2/3 + 5/2 + 12/5
= 20/30 + 75/30 + 72/30
= 167/30
= 5,56
= 5 1/2 (A)
2. 6 3/4 - 5 1/2 + 2 1/4 = …
= 27/4 - 11/2 + 9/4
= 6,75 - 5,5 + 2,25
= 3,5 (D)