Question

efetue.A) 2 1/2+3/5,B) 4/5+3 1/4, C)3/4+2 1/3, D) 2 1/3+4/9, E)2 3/5-1/10 F)3 1/5-1/6 G)11/2-2 1/3 H)9/2-2 1/3

Answer 1

Olá...

a)

2 1/2 + 3/5

5/2 + 3/5⇒mmc = 10

25 + 6/10

31/10

b)

4/5 + 3 1/4

4/5 + 13/4⇒mmc = 20

16 + 65/20

81/20

c)

3/4 + 2 1/3

3/4 + 7/3 ⇒ mmc = 12

9 + 28/12

37/12

d)

2 1/3 + 4/9

7/3 + 4/9⇒mmc = 9

21 + 4 /9

25/9

e)

2 3/5 - 1/10

13/5 - 1/10⇒mmc = 10

26 - 1/10

25/10 ÷ 5

5/2

f)

3 1/5 - 1/6

16/5 - 1/6⇒mmc = 30

96 - 5/30

91/30

g)

11/2 - 2 1/3

11/2 - 7/3⇒mmc = 6

33 - 14/6

19/6

h)

9/2 - 2 1/3

9/2 - 7/3⇒mmc = 6

27 - 14/6

13/6

Espero ter ajudado.