a/ 17 - 25 + 55 - 17
= ( 17 - 17 ) + ( 25 + 25 )
= 0 + 50
= 50.
---
b/ 25 - (-75) + 32 - ( 32 + 75 )
= 25 + 75 + 32 - 32 - 75
= 25 + ( 32 - 32 ) + ( 75 - 75 )
= 25 + 0 + 0
= 25.
---
c/ (-5) . 8 . (-2) . 3
= [(-5) . (-2)] . ( 8 . 3 )
= 10 . 24
= 240.
---
d/ (-15) + (-122)
= -137.
---
e/ ( 7 - 10 ) + 3
= -3 + 3
= 0.
---
g/ |-127| - 18 . ( 5 - 6 )
= 127 - 18 . (-1)
= 127 - (-18)
= 145.