解2r+3.14*r=15.42
问题描述:
解2r+3.14*r=15.42
答
2r+3.14*r=15.42
5.14r = 15.42
r = 3
解2r+3.14*r=15.42
2r+3.14*r=15.42
5.14r = 15.42
r = 3