500 + 800 + 700 + 2000 = 4000
kmik nha
500 + 800 + 700 + 2000
= 1300 + 700 + 2000
= 2000 + 2000
= 4000
500 + 800 + 700 + 2000 =
= 500 + 1500 + 2000
= 2000 + 2000
= 4000
500+800+700+2000
=1300+700+2000
=2000+2000
=4000
500 + 800 + 700 + 2000 = 1300 + 700 + 2000
= 2000 + 2000
= 4000
500 + 800 + 700 + 2000
= 1300 + 700 + 2000
= 2000 + 2000
= 4000
