Question

Observe o exemplo e efetue as seguintes adições e subtrações:
2+1/4=8/4+1/4= 9/4
Agora resolva:

a. 7+5/6=
b. 4-3/11=
c. 1/5+2+3/5=
d. 5/3+1-7/3=

Answer 1

Oi...

a)

7 + 5/6 =o mmc = 6

42 + 5/6

47/6

b)

4 - 3/11 = 0 mmc = 11

44 - 3/11

41/11

c)

1/5 + 2 + 3/5 = o mmc de (5,1,5) = 5

1 + 10 + 3/5

14/5

d)

5/3 + 1 - 7/3 = o mmc de (3,1,3) = 3

5 + 3 - 7/3

1/3

Boas lições.

Answer 2

Resposta:

$a)\\ 7+{5\over6}={42\over6}+{5\over6}={47\over6}\\ \\ b)\\ 4-{3\over11}={44\over11}-{3\over11}={41\over11}\\ \\ c)\\ {1\over5}+2+{3\over5}={1\over5}+{10\over5}+{3\over5}={14\over5}\\ \\ d)\\ {5\over3}+1-{7\over3}={5\over3}+{3\over3}-{7\over3}={1\over3}$