Ex 3 si 4 va rog dau coroana repedee!!!
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Răspuns:
3.a)19/5+3/5=21/5
b)5/4+9/4=14/4
c)8/3-4/3=4/3
d)17/6-19/6= -2/6= -1/3
e) -11/3-5/3= -16/3
f) -10/7-29/7= -39/7
4.a)13/5
b)11/3
c)7/4- 1/4=6/4=3/2
d)-6/7+5/7=1/7
e)-5/6-5/6= -10/6= -5/3
f)-3/8-11/8= -14/8= -7/4