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efectuati 1/ 2 +5/3
b)1/2+2/5
c)5/2+1/6
d)7/12+1/24
e)1/18+7/36+11/72
Dau coroana!!!Ajutor!


Răspuns :

a)1/2+5/3=3/6+10/6=13/6
b)5/2+2/5=25/10+4/10=29/10
c)5/2+1/6=15/6+1/6=16/6
d)7/12+1/24=14/24+1/24=15/24
e01/18+7/36+11/72=4/72+14/72+11/72=29/72