Question

Alguém poderia me ajudar?

Answer 1

E31

a) 19/6

3/2 + 5/3=

9/6 + 10/6= 19/6

b) -13/10

1/5 + (-3/2)=

2/10 + (-15/10)= -13/10

c) 11/21

-2/3 + 1/7=

-14/21 + 3/21= -11/21

d) -7/10

-1/5 + (-1/2)=

-2/10 + (-5/10)= -7/10

E32

a) 9/8

3/8 + 5/8 + 1/8=

8/8 + 1/8= 9/8

b) -56/14

2/7 + (-9/2) + 3/14=

4/14 + (-63/14) + 3/14=

(-59/14) + 3/14= -56/14

c) 89/30

-1/5 + (-7/3) + 11/2=

-6/30 + (-70/30) + 165/30=

-76/30 + 165/30= 89/30

d) -371/66

-2/3 + (-5/11) + (-9/2)=

-44/66 + (-30/66) + (-297/66)=

(-74/66) + (-297/66)= -371/66