8/9 *[3/4 -(7/16 -0.125)]用简便方法计算
问题描述:
8/9 *[3/4 -(7/16 -0.125)]用简便方法计算
答
8/9 *[3/4 -(7/16 -0.125)]
=8/9 *[3/4-(7/16-1/8)]
=8/9 *[12/16-7/16+2/16]
=8/9 *[7/16]
=7/18