Sagot :
A = 8/3 -5/3 X 21/20
A = 8/3 - 105/60
A = 8/3 - 21/12
A = 32/12 - 21/12 = 11/12
B = (6/3 +2/3) : (12/15 -10/15)
B = 8/3 : 2/15
B = 8/3 X 15/2
B = 120/6 = 6
A = 8/3 -5/3 X 21/20
A = 8/3 - 105/60
A = 8/3 - 21/12
A = 32/12 - 21/12 = 11/12
B = (6/3 +2/3) : (12/15 -10/15)
B = 8/3 : 2/15
B = 8/3 X 15/2
B = 120/6 = 6