x-35%x=0.52

问题描述:

x-35%x=0.52
9分之8x+18分之7x=15分之7

x-35%x=0.52
0.65X=0.52
X=0.8
9分之8x+18分之7x=15分之7
乘以90得 80x+35x=42
135x=42
x=14/45