= ( 64+36)+(58+22)+(67+33)
= 100 + 80 +100
= 100x2+80
= 200+80= 280
k mk nha
64 + 58 + 36 + 67 + 33 + 32
= ( 64 + 36 ) + ( 67 + 33 ) + ( 58 + 22 )
= 100 + 100 + 80
= 200 + 80
= 280
(64+36)+(58+22)+(67+33)
= 100+80+100=280
64+58+36+67+33+22
(64+36)+(58+22)+(67+33)
100+80+100
280
64 + 58 + 36 + 67 + 33 + 22
= ( 64 + 36) + ( 58 + 22 ) + ( 67 + 33 )
= 100 + 80 + 100
= 280
K TỚ
64+58+36+67+33+22
=(64+36)+(58+22)+(67+33)
=100+80+100
=280
64+58+36+67+33+22
=(64+36)+(58+22)+(67+33)
=100+80+100
=280