1 + 2 + 3 + 4
= 3 + 3 + 4
= 6 + 4
= 10
1 + 2 + 3 + 4
= (1 + 4) + (2 + 3)
= 5 + 5
= 5 x 2
= 10
1+2+3+4=?
1+2+3+4=3+3+4=6+4=10 k minh nha
1 + 2 + 3 + 4 = 10
nhớ k cho mk nhé, thank you
1 +2 +3 + 4 = (1 + 4) + (2 + 3) = 5 + 5 = 5 x 2 =10
1 +2 + 3 + 4 = ( 1 + 4 ) + ( 2 +3 ) = 5 + 5 = 10