Question

Alguém me ajuda pfv preciso disso

Answer 1

Resposta:

1 ) a) 3/5 + 7/5 =

(3 + 7) / 5 =

10/5 = 5/1 = 5

2) a ) 5/2 - 2/3 =

( 5 × 3 - 2 × 2 ) / 6 =

( 15 - 4 ) / 6 =

11/6

3) a) ( -5/2 ) • 3/3 =

( - 5 × 3 ) / 2 × 3 =

- 15/6

b) 4,1 × 5,2 =

41/10 × 52/10 =

41 × 52 / 10 × 10 =

2.132/100=

21,32

4) a) 1/2 : 4/3 =

1/2 × 3/4 =

( 1 × 3 ) / ( 2 × 4 ) =

3/8

b) 12,1 : 1,1 =

121/10 × 11/10 =

121/10 × 10/11 =

( 121 × 10 ) / ( 10 × 11 ) =

1210/ 110 =

121