1) decompose 4/8 a) 1/8+ 2/8+ 1/8 b) 1/8+ 5/8+ 2/8 2) decompose 5/9 a) 1/10+ 3/9 +4/9 b) 1/9 +4/9 3) decompose 4/7 a) 2/7 +2/7 b) 1/7+2/7+2/7 4) decompose 7/10 a) 3/10 +7/10 +5/10 b) 3/10+ 4/10 5) decompose 7/12 a) 1/12+ 6/12 b) 3/12+ 3/12+ 3/12 6) decompose 4/6 a) 1/6+3/6+2/6 b) 2/6+ 2/6 7) decompose 5/6 a) 3/6+2/6 b) 1/6+1/6+2/6

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