Bonsoir
A=1/3+5/6÷3/2
A = 1/3 + 5/6 x 2/3
A = 1/3 + 10/18
A = (1 x 6) / (3 x 6) + 10/18
A= 6/18 + 10/18
A = 16/18
A = (2 x 8) / (2 x 9)
A = 8/9
B=3/5-17/6
B = (3 x 6) / (5 x 6) - (17 x 5) / (6 x 5)
B = 18/30 - 85/30
B = - 67/30
C=-3/4×3/2+2/3×5/4
C = - 9/8 + 10/12
C = (- 9 x 3) / (8 x 3) + (10 x 2) / (12 x 2)
C = - 27/24 + 20/24
C = - 7/24.