1) -540:9+(-450):5+160-540:9 = -60-450:5 = -90-60 + (-90) + 160 = 10
2) -860:20-625:25+75-860:20 = -43-625:25 = -25-43 - (-25) + 75 = 7
3) 256x(37x(-9)+33):(-1200)37x(-9) = -333-333 + 33 = -300256x(-300):(-1200) = -6400
4) 5100:(-2279:53+26)x(-17)-2279:53 = -43-43 + 26 = -175100:(-17)x(-17) = 5100:289 = 17
1) -540:9+(-450):5+160
-540:9 = -60
-450:5 = -90
-60 + (-90) + 160 = 10
2) -860:20-625:25+75
-860:20 = -43
-625:25 = -25
-43 - (-25) + 75 = 7
3) 256x(37x(-9)+33):(-1200)
37x(-9) = -333
-333 + 33 = -300
256x(-300):(-1200) = -6400
4) 5100:(-2279:53+26)x(-17)
-2279:53 = -43
-43 + 26 = -17
5100:(-17)x(-17) = 5100:289 = 17