2- Determine o valor das frações:a) 1 + 1 --- --- = 3 3b) 9 + 5 --- --- = 10 2c) 1 - 1 --- --- = 4 6.... Pergunta de ideia deLarii015

September 2019 1 22 Report

2- Determine o valor das frações:

a) 1 + 1
--- --- =
3 3

b) 9 + 5
--- --- =
10 2

c) 1 - 1
--- --- =
4 6

d) 7 - 1
--- --- =
12 5

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lelunardi1 A) 1/3 + 1/3 = 2/3

b) 9/10 + 5/2 = mmc = 10
10:10.9 + 10:2.5 / 10 =
9 + 25 /10 =
34/10

c) 1/4 - 1/6 = mmc = 12
12:4x1 - 12:6.1 / 12 =
3 - 2 / 12 =
1/12

d) 7/12 - 1/5 = mmc = 60
60:12x7 - 60:5x1 / 60 =
5 x 7 - 12 x 1 / 60 =
35 - 12 / 60 =
23 / 60

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