1 + 2 = 3 1 - 1 = 0
2 + 3 = 5 2 - 1 = 1
3 + 1 = 4 3 - 2 = 1
5 + 2 = 7 5 - 1 = 4
1+2=3
2+3=5
3+1=4
5+2=7
1-1=0
2-1=1
3-2=1
5-1=4
1+2=3
2+3=5
3+1=4
5+2=7
1-1=0
2-1=1
3-2=1
5-1=4
1+2=3 1-1=0
2+3=5 2-1=1
3+1=4 3-2=1
5+2=7 5-1=4
k mình nhé
1+2=3 2+3=5 3+1=4 5+2=7
1-1=0 2-1=1 3-2=1 5-1=4