Răspuns :

Andreinareaid
1.
7 x 9/10
8x 2/5
8 x 5/12

2.
28/4
59/10
63/13

3.x=67-60=7
x=(109-5):13=8

Răspuns:

1.a)

7 9/10

b) 8 2/5

c)

8 5/12

Ex.2

a) 31/4

b)59/10

c) 63/13

Ex.3

a) x=7

b) 109-5= 104

104: 13= 8

Deci x 5/13= 8 5/13; x= 8

x=7

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