155x23／156＋11／156×3 等于多少,要简便计算哦
问题描述：
155x23／156＋11／156×3 等于多少,要简便计算哦
答
155x23／156＋11／156×3
=[31×5×(24-1)+11×3]/156
=(31×120-31×5+33）/156
=（3720-155+33）/156
=（3720-122）/156
=3598/156
=23又78分之5
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
答
155×23/156＋11/156×3
＝155×23/156+33/156
＝（155×23+33）/156
＝3598/156
＝23又5/78