98*5/4+3*5/4-5/4等于几?
问题描述：
98*5/4+3*5/4-5/4等于几?
答
原式=（98+3-1）*5/4=100*5/4=125
答
98*5/4+3*5/4-5/4
=(98+3-1)*5/4
=100x5/4
=25x5
=125