Question

Va rog sa ma ajutați, nu imi iese nicicum rezultatul ca la răspunsuri
Mulțumesc! ​

Answer 1

= 7 : (25 - 4)/10 + 11/30 : 5/3 - 1

= 7 × 10/21 + 11/30 × 3/5 - 1

= 10/3 + 11/50 - 1

= (50 + 33 - 150)/150

= - 67/150

Answer 2

Răspuns:

Explicație pas cu pas:

7 : ( 5/2 - 2/5 ) + 11/30 : 1 2/3 + ( -1 )^2005 =

7/1 : ( 25/10 - 4/10 ) + 11/30 : 5/3 + ( -1 ) =

7/1 : 21/10 + 11/30 × 3/5 - 1 =

7/1 × 10/21 + 11/10 × 1/5 - 1 =

1/1 × 10/3 + 11/50 - 1 =

10/3 + 11/50 - 1 =

50/150 + 33/150 - 150/150 =

83/150 - 150/150 = -67/150