0,5+0,5=1
1:0,5=2
2-0,5=1,5
1,5:0,5=3
số đó là 3
3 bn ạ, mik giải rùi, đúng 100% lun đó
là 3 đó mình làm trên violympic rồi
3 là đúng 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
là 3 đấy mình làm rồi đúng 10000% sai mình cho 10 000 đồng
3 nheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
lấy 0.5 + 0.5 = 1
1 : 0.5 = 2
2 - 0.5 = 1.5
1.5 : 0.5 = 3
ai thấy đúng thì cho mình nhé
kết bạn với mình nhá