5/17x9/27+9/17x7/24的简便运算
问题描述:
5/17x9/27+9/17x7/24的简便运算
答
是5/17x9/24+9/17x7/24
=9/17x5/24+9/17x7/24
=9/17×(5/24+7/24)
=9/17×1/2
=9/34