30%x+4,5*二分之三=5,1
问题描述:
30%x+4,5*二分之三=5,1
答
7过程0.3x +3=5.1
0.3x =2.1
x =7
30%x+4,5*二分之三=5,1
7过程0.3x +3=5.1
0.3x =2.1
x =7