(-8)+16+20 sifat asosiatif

(-8 +16) + 20
= 8 + 20
= 28

(28-19) + 3
= 9+ 3
= 12

(-80+65)+(-30)
= -15 +(-30)
= -(15+30)
= -45

-40+ (-60+30)
= -40 - 30
= -70

1. ) -8 + ( 16 + 20 ) = -8 + 36 = 28
2.) ( 28 - 19) + 3 = 9 + 3 = 12
3 ) -80 + ( 65 - 30 ) = -80 + 35 = - 45
4 ) ( -40 - 60 ) + 30 = - 100 + 30 = - 70