A) 2/5+1/3=
b)5/6-1/2=
c)4/9×15/8=
d)15/14:25/49
e)2/3:(4/9-1/3)=
f)(2/3-1/4)×8/15=
Am nevoie rapid dau coroana
/ = pe de ex 2 pe 5​