Question

poderiam me ajudar nestas perguntas se poderem

Answer 1

5.1  

1 + 1 +1/3 -1 -1/5

=1+1/3-1/5

=15/15+5/15-3/15

=(15+5-3)/15

=17/15

5.2

2 +3 +1/4 -2 -3/4

3 +1/4  -3/4

3-2/4

3-1/2

6/2-1/2=5/2

5.3

4+1/4 -1-5/12 -1

2 +1/4-5/12

24/12 +3/12-5/12

22/12=11/6

5.4

4+1/9 -2 -2/3 +1/3

4 +1/9-2 -1/3

2 +1/9-3/9

2-2/9

18/9-2/9=16/9

5.5

4+1/2 -1-2/9 +3

6 +1/2-2/9

6+9/18-4/18

6+5/18

(6*18+5)/18

=113/18

5.6

2+1/3 -4 -3/10 +3 +5/6

1 +2/6 -3/10+5/6

1+7/6 -3/10

1+(7*10-6*3)/60

1+52/60

1+13/15

15/15+13/15

=28/15