(3/8)+(x/8)+(x/9)=3/4 解方程

问题描述:

(3/8)+(x/8)+(x/9)=3/4 解方程

3/8+x/8+x/9=3/4
x(1/8+1/9)=3/4-3/8
x*17/72=3/8
x=3/8*72/17
x=27/17