12000*x=800*30
12000*x=24000
X=24000:12000
X=2
12000*2=800*30
24000=24000
80000:y=4000-2000
80000:y=2000
Y=80000:2000
Y=40
80000:40=4000-2000
2000=2000
12000*x=800*30
12000*x=24000
X=24000:12000
X=2
12000*2=800*30
24000=24000
80000:y=4000-2000
80000:y=2000
Y=80000:2000
Y=40
80000:40=4000-2000
2000=2000