Bonjour
A= 7/6+11/3x4/5
A = 7/6 + 33/15
A = (7 x 5) / (6 x 5) + (33 x 2) (15 x 2)
A = 35/30 + 66/30
A = 101/30
B= 3/5-1/5x(5/2+2)
B = 3/5 - 1/5 x [5/2 + (2 x 2) / (1 x 2)]
B = 3/5 - 1/5 x (5/2 + 4/2)
B = 3/5 - 1/5 x 9/2
B = 3/5 - 9/10
B = (3 x 2) / (5 x 2) - 9/10
B = 6/10 - 9/10
B = - 3/10
C= 8/25 x 77/6 x (-20/88)
C = 616/150 x (- 20/88)
C = - 12 320/13 200
C = (880 x - 14) / (880 x 15)
C = - 14/15
D= -2/-11 x -5/-6 x -3/35
D = 10/66 x (- 3/35)
D = - 30/2 310
D = (30 x - 1) / (30 x 77)
D = - 1/77.
