a) 4/3 + 1/3 + 1/5=......................................................................................................................................................................
b) 4/3 + 1/3 - 1/5=........................................................................................................................................................................
c) 1/2 nhân 1/3 : 1/4=...................................................................................................................................................................
d)1/2 : 1/3 : 1/4=...............................................................................................................................................................................
ai giải giúp mình nhé ^ _ ^
a=28/15
b=22/15
c=2/3
d=6
k hộ cái nha
a)28/15
b)22/15
c)2/3
d)6