36.82+36.12+36.3+72.4
=36.(82+12+3)+72.4
=36.103+72.4
đến đây dễ r
36 . 82 + 36 . 12 + 36 . 3 + 72 x 4
= 36 . (82 + 12 + 3 ) + 72 x 4
= 36 . 97 + 72 . 4
= 3492 + 288
= 3780
36.82+36.12+36.3+72.4
=36(82+12+3+8)
=36.105
=3780
36.82 + 36.12 + 36.3 + 72 . 4
= 36 . (82 + 12 + 3) + 72 .4
= 36 . 97 + 288
= 3492 + 288
= 3780