1500x=6000-1000x1500x+1000x=60002500x=6000x=6000÷2500x=5.4
15ooX=6000一1000x,2500x二6000,x=2.4
1500x=6000-1000x1500x+1000x=6000x=2.4
1500x=6000-1000x