tolong banget nh yg no 1,2 pake cara y

1. (-1.592)-(-2.128):38×12 = -920
2. 18:2=9:3=3
32:2=16:2=8:2=4:2=2
54:2=27:3=9:3=3

18= 2,3²
32= 2×2×2×2×2
54= 2, 3³

fpb 18,32,dan 54= 2×3²=18
kpk 18,32,54=2×3³=54