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17/6 × 4/3 = 68/18
= 34/9
= 3 7/9

2 5/6 × 1 1/3
= 2 5/6 = 6×2+5 = 17/6
= 1 1/3 = 3×1+1 = 4/3
17/6 × 4/3 = 17×4/6×3
= 68/ 18
= 34/9
= 3 7/9