(7/8-1/8)+1/4=
(7/3-4/3)-12/13= inseamna fractie
(5/6+7/6)-1/7=
4/3-(9/11+2/11)=
Amalia01:
Semnul "/ "ce vrea sa însemne?
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(7/8-1/8)+1/4=6/8+1/4=8/8=1
(7/3-4/3)-12/13=3/3-12/13=1-12/13=1/13
(5/6+7/6)-1/7=12/6-1/7=2-1/7=13/7
4/3-(9/11+2/11)=4/3-11/11=4/3-1=1/3
(7/3-4/3)-12/13=3/3-12/13=1-12/13=1/13
(5/6+7/6)-1/7=12/6-1/7=2-1/7=13/7
4/3-(9/11+2/11)=4/3-11/11=4/3-1=1/3
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