15.2-20⼀7+3.8-6⼀7怎么算?

2025-04-06 03:53:11
推荐回答(1个)
回答1:

15.2-20/7+3.8-6/7
=15.2+3.8-(20/7+6/7)
=19-26/7
=15又7分之2