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e. 5/8 + 2/5 = 25/40 + 16/40 = 41/40 = 1 1/40
h. 2/7 + 19/6 = 12/42 + 133/42 = 145/42
i. 1 2/5 + 2 3/8 = 7/5 + 19/8 = 15/40 + 95/40 = 151/40
J. kurang terlihat