Sagot :
bonsoir
A= 3/4 + 3/16 = 12/16 + 3/16 = 15/16
B= 2- 1/3 = 6/3 - 1/3 = 5 /3
C= 5/21 - 1/7 = 5/21 - 3/21 = 2/21
D= 3/4 - ( 1/2 - 1/8) = 3/4 - ( 4/8 - 1 /8)
= 6/8 - 3/8 = 3 /8
bonsoir
A= 3/4 + 3/16 = 12/16 + 3/16 = 15/16
B= 2- 1/3 = 6/3 - 1/3 = 5 /3
C= 5/21 - 1/7 = 5/21 - 3/21 = 2/21
D= 3/4 - ( 1/2 - 1/8) = 3/4 - ( 4/8 - 1 /8)
= 6/8 - 3/8 = 3 /8