Question

Me ajudemmmm!! A 1 questão tem que resolver as adições e subtrações

Answer 1

Resposta:

1 -

a) 6/9 + 1/3 = 6/9 + 3/9 = 9/9 = 1

b) 2/5 + 1/6 = 12/30 + 5/30 = 17/30

c) 5/6 - 10/12 = 10/12 - 10/12 = 0

d) 1/2 + 1/3 + 1/4 = 12/24 + 8/24 + 6/24 = 26/24 = 13/12

e) 3/15 + 1/5 - 2/10 = 3/15 + 3/15 - 3/15 = 3/15 = 1/5

2-

a) 1/2 . 3/4 = 3 /8

b) 1/3 . 3/5 = 3/15 = 1/5

c) 5/2 . 7/6 = 35/12

d) 4/5 .10/3 = 40/15 = 8/3

e) 7/2 . 10/21 = 70/42 = 35/21 = 5/3

3 -

a) 2/3 ÷ 2/3 = 2/3 . 3/2 = 6/6 = 1

b) 2/3 ÷ 1/3 = 2/3 . 3/1 = 6/3 = 2

c) 3/8 ÷ 1/2 = 3/8 . 2/1 = 6/8 = 3/4

d) 1/2 ÷ 1/4 = 1/2 . 4/1 = 4/2 = 2

e) 4/5 ÷ 3/2 = 4/5 . 2/3 = 8/15

f) -2/3 ÷ -1/3 = -2/3 . 3/-1 = -6/-3 = -2

Explicação passo-a-passo: