155*23/156+11/156*3简算
问题描述:
155*23/156+11/156*3
简算
答
155×23/156+11/156×3
=155×23/156+33/156
=(155×23+33)/156
=3598/156
=23又5/78
答
155*23/156+11/156*3
=(156-1)*23/156+11/156*3
=156*23/156-23/156+11/156*3
=23+(33/156-23/156)
=23+10/156
=23又5/78