2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 2 x 10 = 20
ủng hộ mk nha
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 4 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 6 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 8 + 2 + 2 + 2 + 2 + 2 + 2
= 10 + 2 + 2 + 2 + 2 + 2
= 12 + 2 + 2 + 2 + 2
= 14 + 2 + 2 + 2
= 16 + 2 + 2
= 18 + 2
= 20
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 2 x 10
= 20
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 4 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 6 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 8 + 2 + 2 + 2 + 2 + 2 + 2
= 10 + 2 + 2 + 2 + 2 + 2
= 12 + 2 + 2 + 2 + 2
= 14 + 2 + 2 + 2
= 16 + 2 + 2
= 18 + 2
= 20
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 2 x 10
= 20
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 4 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 6 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 8 + 2 + 2 + 2 + 2 + 2 + 2
= 10 + 2 + 2 + 2 + 2 + 2
= 12 + 2 + 2 + 2 + 2
= 14 + 2 + 2 + 2
= 16 + 2 + 2
= 18 + 2
= 20
2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
= 2 x 10
= 20