Bonsoir,
Calculer :
A = 1/5 + 5/2 + 8/10
A = 1×2/5×2 + 5×5/2×5 + 8/10
A = 2/10 + 25/10 + 8/10
A = 2 + 25 + 8/10
A = 35/10
A = 7/2
B = 5/3 + -5/12 + 1/8
B = 5×8/3×8 + -5×2/12×2 + 1×3/8×3
B = 40/24 + -10/24 + 3/24
B = 40 - 10 + 3/24
B = 33/24
B = 11/8
Bonne soirée.
