12000x=24000
x=24000÷12000
x=2
12000×2=800×30
24000=24000
80000y=2000
y=80000÷2000
y=40
80000÷40=4000-2000
2000=2000
12000x=24000
x=24000÷12000
x=2
12000×2=800×30
24000=24000
80000y=2000
y=80000÷2000
y=40
80000÷40=4000-2000
2000=2000