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Catelusdragut2003
a fost răspuns

1). 55\66 - 44\55
2). ( 7\9 + 77\99 + 777\999 ) • 1\3

Răspuns :

Flavistin
1) 55/66-44/55=0,8(3)-0,8=0,0(3)
2) (7/9+77/99+777/999)x1/3=(0,(7)+0,(7)+0,(7))x1:3=2,(3)1x1:3=2,(3):3=0,(7)
Anamariaudresc


55/66-44/55=5/6-4/5(Simplificam prin 10)

25/30-24/30=1/30

2)(7/9+77/99+777/999)*1/3=

(7/9+7/9+7/9)*11/3=

21/9*1/3=

7/9=

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