早教吧作业答案频道 -->数学-->
17*13*(3/13-0.125)/2又1/8/(1-1/2+7/8)=?
题目详情
17*13*(3/13-0.125)/2又1/8/(1-1/2+7/8)=?
▼优质解答
答案和解析
17×13×(3/13-0.125)÷2又1/8÷(1-1/2+7/8)
=17×13×(3/13-1/8)÷17/8÷(8/8-4/8+7/8)
=17×13×(3/13-1/8)×8/17÷11/8
=17×13×(3/13-1/8)×8/17×8/11
=17×13×8/17×8/11×(3/13-1/8)
=13×8×8/11×(3/13-1/8)
=8/11×[13×8×(3/13-1/8)]
=8/11×(13×8×3/13-13×8×1/8)
=8/11×(24-13)
=(8/11)×11
=8
=17×13×(3/13-1/8)÷17/8÷(8/8-4/8+7/8)
=17×13×(3/13-1/8)×8/17÷11/8
=17×13×(3/13-1/8)×8/17×8/11
=17×13×8/17×8/11×(3/13-1/8)
=13×8×8/11×(3/13-1/8)
=8/11×[13×8×(3/13-1/8)]
=8/11×(13×8×3/13-13×8×1/8)
=8/11×(24-13)
=(8/11)×11
=8
看了 17*13*(3/13-0....的网友还看了以下：