Sagot :
A)2/3+1/8
=(16+3)/24
=19/24
B)-2/5+3/4
=(-8+15)/2
=7/2
C)-5/7-3/2
=(-10-21)/14
=-31/14
D)4/7-4/5
=(20-28)/35
=-8/35
E)3-5/7
=(21-5)/7
=16/7
F)-2-3/4
=(-8-3)/4
=-11/4
A)2/3+1/8
=(16+3)/24
=19/24
B)-2/5+3/4
=(-8+15)/2
=7/2
C)-5/7-3/2
=(-10-21)/14
=-31/14
D)4/7-4/5
=(20-28)/35
=-8/35
E)3-5/7
=(21-5)/7
=16/7
F)-2-3/4
=(-8-3)/4
=-11/4