3减7分之6乘3分之1减7分之5 要递等式计算

问题描述:

3减7分之6乘3分之1减7分之5 要递等式计算

3-6/7*1/3-5/7
=3-(2/7+5/7)
=3-1
=2

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