Răspuns:
Explicație pas cu pas:
c)
3/4+1/6+5/12=8/12+2/12+5/12=25/12
e)
5/24+7/36+1/72=15/72+14/72+1/72=30/72=15/36=5/12
f) 1/45+11/60+23/180=4/180+33/180+23/180=60/180=1/3
