Question

1)efetue
a)-7+3=
b)-2+15=
c)-3+(-9)=
d)-8+0=
e)+31+(-45)=
f)+7+(-5)=
g)+15+(-7)=
h)-9+(-8)=
i)27-15=
j)-2+69
ajudem!!

Answer 1

a) -7 + 3=

- 4

b) - 2 + 15 =

13

c) - 3 + ( - 9 ) =

- 3 - 9 =

-12

d) - 8 + 0 =

- 8

e) + 31 + ( - 45 ) =

+ 31 - 45 =

- 14

f) + 7 + ( - 5 ) =

+ 7 - 5 =

+ 2

g) + 15 + (- 7) =

+ 15 - 7=

+ 8

h) - 9 + ( - 8 ) =

- 9 - 8=

- 17

i) 27 - 15=

12

j) - 2 + 69=

67

Answer 2

A) -7 + 3

= -4

B) -2 + 15

= 13

C) -3 + (-9)

= −12

D) -8 + 0

= -8

E) +31 + (-45)

31 + −45

= −14

F) +7 + (-5)

7 + −5

= 2

G) +15 + (-7)

15 + −7

= 8

H) -9 + (-8)

−9 + −8

= −17

I) 27 - 15

27 + −15

= 12

J) -2 + 69

= 67