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no. 22
3/4 + 5 3/6 = 3/4 + 33/6 (penyebutnya dijadikan 12)
(9+66)/12 = 75/12 (dibagi 3) = 25/4 = 6 1/4 (b)

no. 23
1 1/3 + 2 4/5 + 6 1/2 = 4/3 + 14/5 + 13/2 (penyebutnya dikalikan 30)
(40+84+195)/30 = 319/30 = 10 19/30 (c)

no. 24
17 3/5 - 7 7/8 = 88/5 - 63/8 (penyebutnya dikalikan 40)
(704 - 315)/40 = 389/40 = 9 29/40 (b)