解方程:2x+x%=40请大哥大姐们说详细点

问题描述:

解方程:2x+x%=40
请大哥大姐们说详细点

解方程:
2x+x%=40
2.01x=40
x=40/2.01=4000/201

两边同时乘100
200X+X=4000
201X=4000
X=4000/201

2x+x%=40
2x+0.01x=40
2.01x=40
x=40÷2.01
x=4000/201
x≈19.90

2x+x%=40
200x+x=4000
201x=4000
x=4000/201