Question

me ajudem por favor ​

Answer 1

Resposta:

a)

2/5 + 3/7 = o mmc de 5,7=35

14/35 + 15/35 =

29/35

b)

1 + 2/25 = o mmc de 1,25=25

25/25 + 2/25 =

27/25

c)

1/10 + 7/10= denominador igual repete e soma o numerador.

8/10 ÷ 2 =

4/5

d)

1/6 + 5/12 + 1/4 = 0 mmc de 6,12,4 = 12

2/12 +5/12 + 3/12 =

10/12 ÷ 2

5/6

e)

26/36 - 4/6 =0 mmc de 36,6= 36

27/36 - 24/36

3/36 ÷ 3

1/12

f)

1/5 - 2/25 = 0 mmc de 5,25 = 25

5/25 - 2/25 =

3/25

g)

5/28 - 3/28 = denominador igual repete e subtrai o numerador, sinal do maior.

2/28

h)

8/13 - 7/26 =o mmc de 13,26 = 26

16/26 - 7/26 =

9/26