作业帮7/5+6/5+7/2+6/1 = = 7/5+6/5+7/2+6/1 = = 简便计算.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/29 08:50:26
7/5+6/5+7/2+6/1 = = 7/5+6/5+7/2+6/1 = = 简便计算.
7/5+6/5+7/2+6/1 = = 7/5+6/5+7/2+6/1 = = 简便计算.
7/5+6/5+7/2+6/1 = = 7/5+6/5+7/2+6/1 = = 简便计算.
=（.式子）╱1
=5╱7＋5╱6＋2╱7＋1╱6
=5╱7＋2╱7＋5╱6＋1╱6
=1＋1
=2