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AndreeDM
a fost răspuns

calculeaza:3/4 +5/4- 2/4;6/8-2/8 +3/8; 1/9+8/9-5/9; 6/10-4/10+5/10;

Răspuns :

CurrerBell
3/4 +5/4- 2/4 = 6/4 = 1intreg 1/2 

6/8-2/8 +3/8 = 7/8

1/9+8/9-5/9 = 4/9

6/10-4/10+5/10 = 7/10 
Scalambaita
8/4-2/4=6/4 se simplifica prin2=>3/2
4/8+3/8=7/8
9/9-5/9=4/9
2/10+5/10=7/10

Alte intrebari