2/3加八乘以括号里7/8减5/6括号套上这个题怎么做?

问题描述:

2/3加八乘以括号里7/8减5/6括号套上这个题怎么做?

2/3+8×(7/8-5/6)
=2/3+8×7/8-8×5/6
=2/3+7-6又2/3
=7-(6又2/3-2/3)
=7-6
=1