Question

Eu estou aprendendo ainda

Answer 1

Explicação passo-a-passo:

Answer 2

Resposta:

Explicação passo-a-passo:

1) a) 9/13.

b) 6/15 = 3.2/3.5 = 2/5.

c) 19/11.

d) 3/3 = 1.

e) 42/10 = 2.21/2.5 = 21/5.

f) 14/6 = 2.7/2.3 = 7/3.

g) 7/4.

h) 17/6.

2) a) 1/3 + 2/5 = mmc(3,5)=15

5/15 + 6/15 = 11/15.

b) 7/2 + 2/3 =

21/6 + 4/6 = 25/6.

c) 2 + 1/4 = 8/4 + 1/4 = 9/4.

d) 3(1/5) + 2(3/5) =

16/5 + 13/5 = 29/5.

e) mmc(3,5,15)=15

25/15 + 12/15 + 7/15 = 44/15.

f) 4 - 1/7 = 28/7 - 1/7 = 27/7.

i) 3/2 + 2/3 = 9/6 + 4/6 = 13/6.

j) 2(2/5) + 11/2 + 1/3 =mmc()=30.

12/5 +  11/2 + 1/3 =

72/30 + 165/30 + 10/30 = 247/30.

k) 7/12 + 5/18 = mmc(12,18)=36

21/36 + 10/36 = 31/36.

l) 1/6 + 5/4 + 2/3 =

2/12 + 15/12 + 8/12 = 25/12.

m) 9/4 + 2/3 + 5/12 =

27/12 + 8/12 + 5/12 = 40/12 = 4.10/4.3 = 10/3.

n) 3/2 - 2/3 = 9/6 - 4/6 = 5/6.

q) 2 - 7/6 + 3/4 =

24/12 - 14/12 + 9/12 = 19/12.

r) 3/4 + 5/6 - 1/2 =

9/12 + 10/12 - 6/12 = 13/12.

s) 1(4/5) - 1(2/3) + 7/10 =

9/5 - 5/3 + 7/10 =

54/30 - 50/30 + 21/30 = 25/30 = 5.5/5.6 = 5/6.

t) 1/2 - 1/3 + 5/6 - 3/4 =

6/12 - 4/12 + 10/12 - 9/12 = 3/12 = 3.1/3.4 = 1/4.

u) 1/2 + 1/3 + 5/6 =

3/6 + 2/6 + 5/6 = 10/6 = 2.5/2.3 = 5/3.

v) 1(1/2) + 2 - 9/10 =

3/2 + 2 - 9/10 =

15/10 + 20/10 - 9/10 = 26/10 = 2.13/2.5 = 13/5.