Question

1-3/10+2/5

2-2+5/12

3-1/3+5/12+1/15

4+2-5/12

5-2/3+4/10+1/15

6-10/12-2/3​

Answer 1

1) Resposta: 1/5

1-3/10+2/5

-2/10+2/5

1/5

2) Resposta: 5/12

Elimine os opostos ( 2-2 ).

3) Resposta: 97/30

3-1/3 + 5/2 + 1/15

2/3+5/2+1/15

Calculando a soma dos valores dá:

97/30

4) Resposta: 67/12

4+2-5/12

6-5/12

67/12

5) Resposta: 24/5

5-2/3+4/10+1/15

5-2/3+2/5+1/15

75-10+6+1/15

72/15

24/5

6) Resposta: 9/2

6-10/12-2/3​

6-5/6-2/3

36-5-4/6

27/6

9/2

Bons estudos!!