9又17分之9×23分之2-17分之2x23分之9

2025-06-29 04:20:27
推荐回答(1个)
回答1:

9又9/17×2/23-2/17x9/23
=9×2/23+9/17×2/23-2/17x9/23
=9×2/23+2/17×9/23-2/17x9/23
=18/23