Bonjour
Calculer et simplifier
7/8+1/4+1/3
= (7 x 3) / (8 x 3) + (1 x 6) / (4 x 6) + (1 x 8) / (3 x 8)
= 21/24 + 6/24 + 8/24
= 35/24
7/4+3/4+1/2
= 7/4 + 3/4 + (1 x 2) / (2 x 2)
= 7/4 + 3/4 + 2/4
= 12/4
= (4 x 3) / (4 x 1)
= 3
6/7+1/2+1/4
= (6 x 4) / (7 x 4) + (1 x 14) / (2 x 14) + (1 x 7) / (4 x 7)
= 24/28 + 14/28 + 7/28
= 45/28