Question

14/31乘以23加上17/31乘以23，减23？

Answer 1

14/31×23+17/31×23-23
=23×（悔仔做碧衡14/31+17/31-1）
=23×（戚羡31/31-1）=0

Answer 2

运穗或用乘法分配律计算。
14/31×23+17/37×23-23
=（14/肆卖31+17/31-1）×23
=（裂族逗31/31-1）×23
=（1-1）×23
=0×23
=0