Question

Vă rog mult de tot să mă ajutați la ex 4 a

Answer 1

= 4/9 x [ 3/9  +  1/2 : 75/100] : 8/9 =

4/9 x [ 1/3   + 1/2 x 4/3 ] x 9/8 =

4/9 x [ 1/3  + 4/6 ] x 9/8 =

4/9 x [1/3 + 2/3] x 9/8 =

4/9 x 1 x 9/8 =

4/8 =

1/2

Answer 2

a) (2/3)²·[0,(3) + 1/2 : 0,75] : 8/9 =

= 4/9·[3/9 + 1/2 : 75/100] : 8/9  

= 4/9·(1/3 + 1/2·4/3)·9/8  

= 4/9(1/3 + 4/6)·9/8

= 4/9(1/3 + 2/3)·9/8

= 4/9·9/8

= 4/8

= 1/2