Răspuns :
4c)7/36+5/18-1/24+11/48=13/48
d)-5/48+7/18-1/36-11/12=-95/144
5c.-5/24+7/36-11/12+1/18=-7/8
d)-5/48+7/18-1/36-11/12=-95/144
5c.-5/24+7/36-11/12+1/18=-7/8