Question

Calcule:

a) 3/4 + 8/7

b) 5/7 - 3/6

c) 6/9 × 4/6

d) 16/3 ÷ 4/6

e) 6/8 ÷ 4/5

Answer 1

OI

a) 3/4 + 8/ 7 ⇒o mmc de 4,7 = 28

21 + 32 / 28

53/28

b) 5/ 7 - 3/6 ⇒ 0 mmc de 7,6 = 42

30 - 21 /42

9/42 ÷ 3

3/14

c) 6 /9 × 4/ 6

24/54 ÷ 6

4/9

d) 16/3 ÷ 4/6

16/3 × 6/4

96/12 ÷ 12

8

e) 6/8 ÷ 4/5

6/8 × 5/4 ÷ 2

15/16

Espero ter ajudado.

Answer 2

Calcule:
4,7=28

a) 3/4 + 8/7

=21+32=53/28



b) 5/7 - 3/6

30-21/42=9/42

c) 6/9 × 4/6

=24/54

d) 16/3 ÷ 4/6

=96/18

e) 6/8 ÷ 4/5

=30/32