2*1-85.8\858+85.5\0.1 100*79+184*21+84*29 (七分之一+四十一分之五）*7-35\41 简便计算

2*1-85.8\858+85.5\0.1 100*79+184*21+84*29 (七分之一+四十一分之五）*7-35\41 简便计算
2*1-85.8\858+85.5\0.1 100*79+184*21+84*29 (七分之一+四十一分之五）*7-35\41 简便计算

2*1-85.8\858+85.5\0.1 100*79+184*21+84*29 (七分之一+四十一分之五）*7-35\41 简便计算
2*1-85.8\858+85.5\0.1
=2-0.1+855
=856.09
100*79+184*21+84*29
=100*79+100*21+84*21+84*29
=100*(79+21)+84*(21+29)
=100*100+84*50
=10000+4200
=14200
(七分之一+四十一分之五）*7-35\41
=1/7*7+5/41*7-35/41
=1+35/41-35/41
=1+0
=1

1.05-1.7
=2.16-1.7
=0.46