tolong jawab semua !!

a . 9 + ( - 17 )
9 - 17
= - 8

b . 18 + ( - 22 )
18 - 22
= - 4

c . - 7 + ( - 12 )
- 7 - 12
= - 19

d . - 19 + ( - 6 )
- 19 - 6
= - 25

e . 45 + ( - 18 )
45 - 18
= 27

f . 62 + ( - 90 )
62 - 90
= - 28

g . - 47 + ( - 52 )
- 47 - 52
= - 99