39.67+10.38和85.3-24.8415.45+9.6约等于多少

问题描述:

39.67+10.38和85.3-24.8415.45+9.6约等于多少

39.67+10.38
=40.05
85.3-24.84
=60.46
15.45+9.6
=21.05