1500x+2000×3 /2 x+800(350-5/ 2 x)=500000.

问题描述:

1500x+2000×3 /2 x+800(350-5/ 2 x)=500000.

1500x+3000x+800×350-800×5/2x=500000
(1500+3000-2000)x=500000-280000
2500x=220000
x=220000÷2500
x=88