Bonjour
A = 5 x 2/3 - 1/3
A = 10/3 - 1/3
A = 9/3
A = (3 x 3) / (3 x 1)
A = 3
B = 7/4 - 3/4 x 3/2
B = (7 x 2) / (4 x 2) - 9/8
B = 14/8 - 9/8
B = 5/8
C = (5/6 + 7/12) x 3/5
C = [(5 x 2) / (6 x 2) + 7/12] x 3/5
C = (10/12 + 7/12) x 3/5
C = 17/12 x 3/5
C = 51/60
C = (3 x 17) / (3 x 20)
C = 17/20
D = 3/4 x 2/6 + 28/15 x 25/14
D = 6/24 + 700/210
D = 6/24 + (70 x 10) / (70 x 3)
D = 6/24 + 10/3
D = 6/24 + (10 x 8) / ( 3 x 8)
D = 6/24 + 80/24
D = 86/24
D = (2 x 43) / (2 x 12)
D = 43/12
E = (1/3 x 6/5 - 3/10) x 15/14
E = (6/15 - 3/10) x 15/14
E = [(6 x 2) / (15 x 2) - (3 x 3) / (10 x 3)] x 15/14
E = (12/30 - 9/30) x 15/14
E = 3/30 x 15/14
E = 45/420
E = (15 x 3) / (15 x 28)
E = 3/28
F = (8 + 2) / (7 + 2) x (3 x 6) / (5 x 3)
F = 10/14 x 18/15
F = 180/210
F = (30 x 6) / (30 x 7)
F = 6/7.
