Bonjour,
3 × 4/15 = (3×4)/15 = (3×4)/(3×5) = 4/5
7/4 × 7/4 = (7/4)² = 49/16
14/25 × 5/7 = (14×5)/(25×7) = (7×2×5)/(5×5×7) = 2/5
11/20 × 4 = (11×4)/20 = (11×4)/(5×4) = 11/5
2 × 7/3 = 14/3
3/5 ÷ 2 = 3/5 × 1/2 = (3×1)/(5×2) = 3/10
3 × 5/6 = (3×5)/6 = 15/6
11/4 ÷ 3 = 11/4 × 1/3 = (11×1)/(3×4) = 11/12
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Bonjour,
3 × 4/15 = (3×4)/15 = (3×4)/(3×5) = 4/5
7/4 × 7/4 = (7/4)² = 49/16
14/25 × 5/7 = (14×5)/(25×7) = (7×2×5)/(5×5×7) = 2/5
11/20 × 4 = (11×4)/20 = (11×4)/(5×4) = 11/5
2 × 7/3 = 14/3
3/5 ÷ 2 = 3/5 × 1/2 = (3×1)/(5×2) = 3/10
3 × 5/6 = (3×5)/6 = 15/6
11/4 ÷ 3 = 11/4 × 1/3 = (11×1)/(3×4) = 11/12