tolong jawab ya no 1-4

1. 72-3= 69..
2.8:8= 1
3.9000 - 50 + 700 = 9650
4.160 - (-6300) - 900 = 5560

Semoga membantu ^_^

1.-8x(-9)-15:5
=-8x-9
=72
2.24-16:(-4)+12
=24-16=8
=8:(-4)=-2
=-2+12
=10
3.500x(-18)-800:16+700
=-9.000-50+700
=-9.050+700
=-8.350
4.3.960