1800di bagi negatif 45di kali 35di kurang 40di kali 45

1800:(-45)x35-40x45
-40x35-40x45
-1.400-40x45
-3.200

1.800 ÷ (-45) × 35 - 40 × 45
= ((1.800 ÷ (-45)) × 35) - (40 × 45)
= ((-40) × 35) - 1.800
= -1.400 - 1.800
= -3.200