Question

por favor me ajude matematica

Answer 1

Resposta:

   a)

1/3 + 3/5 =

(5 + 9)/15 =

14/15.

   b)

5/8 + 7/12 =

(15 + 14)/24 =

29/24.

   c)

4/9 + 5/6 =

(8 + 15)/18 =

23/18.

   d)

2/5 + 3/10 =

(4 + 3)/10 =

7/10.

   e)

2 + 5/8 =

(16 + 5)/8 =

21/8.

   f)

4/9 + 1 =

(4 + 9)/9 =

13/9.

   g)

2/15 + 1/6 + 2/5 =

(4 + 5 + 12)/30 =

21/30.

   h)

1/3 + 3/4 + 1/6 =

(4 + 9 + 2)/12 =

15/12.

   Espero ter ajudado...