Question

Calcule:
a) 1/3 + 2/5
b) 7/2 + 2/3
c) 2 + 1/4
d)1/2 - 1/3 + 5/6 - 3/4
e) 1 1/2 + 2 - 9/10
f) 2/3 + 3/2
g) 2 2/5 + 11/2 + 1/3

Answer 1

Oi...

a) 1/3 + 2/5 ⇒mmc = 15

5 + 6/15

11/15

b) 7/2 + 2/3 ⇒mmc = 6

21 + 4/6

25/6

c) 2 + 1/4 ⇒mmc = 4

8 + 1/4

9/4

d) 1/2 - 1/3 + 5/6 - 3/4 ⇒mmc = 12

6 - 4 + 10 - 9/12

16 - 13/12

3/12

e) 1 1/2 + 2 - 9/10

3/2 + 2 - 9/10 ⇒mmc = 10

15 + 20 - 9/10

35 - 9/10

26/10 ÷ 2

13/5

f) 2/3 + 3/2 ⇒ mmc = 6

4 + 9/6

13/6

g) 2 2/5 + 11/2 + 1/3

12/5 + 11/2 + 1/3 ⇒mmc = 30

72 + 165 + 10/30

247/30

Bons estudos.