5.32-1又7分之5-3又7分之2+2.68

问题描述:

5.32-1又7分之5-3又7分之2+2.68

5.32-1又7分之5-3又7分之2+2.68
=5.32+2.68-12/7-23/7
=8-(12/7+23/7)
=8-35/7
=8-5
=3