Tolong bantu jawab ya ​

a. 15 x p = -255

p = -255/15

p = -17

B. 15 x (-4) + 100:(-5) = -60 + (-20) = -80

C. ( (-4) + 60 ) / ( 14 – 22 )

56 / -8

-7

D. Sifat asosiatif