tolong dijawab ya pleass 28+12-(-158-48+30) =

28+12-(-158-48+30)
= 28 + 12 - (-206 + 30)
= 28 + 12 - (-176)
= 28 + 12 + 176
= 216

atau bisa dengan sifat distribusi
28+12-(-158-48+30)
= 28 + 12 + 158 + 48 - 30
= 40 + 158 + 48 - 30
= 198 + 48 - 30
= 216