Bonjour,
3/48 + 5/6 = 3/48 + (5×8)/(6×8) = 3/48 + 40/48 = 43/48
4/7 - 11/35 = (4×5)/(7×5) - 11/35 = 20/35 - 11/35 = 9/35
10 + 7/8 = (10×8)/(1×8) + 7/8 = 80/8 + 7/8 = 87/8
23/4 - 3 = 23/4 - (3×4)/(1×4) = 23/4 - 12/4 = 11/4
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Bonjour,
3/48 + 5/6 = 3/48 + (5×8)/(6×8) = 3/48 + 40/48 = 43/48
4/7 - 11/35 = (4×5)/(7×5) - 11/35 = 20/35 - 11/35 = 9/35
10 + 7/8 = (10×8)/(1×8) + 7/8 = 80/8 + 7/8 = 87/8
23/4 - 3 = 23/4 - (3×4)/(1×4) = 23/4 - 12/4 = 11/4