a)[(33 - 3) : 3]3 + 3
= (30 : 3 )6
= 106
b)25 + 2 . {12 + 2 .[3 . (5 - 2) + 1} + 1
= 24 . 2 + 2 . [ 12 + 2 . ( 3 . 3 - 1 ) ] + 1
= 16 . 2 + 2 . [ 12 + 2.( 9 - 1 ) + 1
= 16 . 2 + 2 .( 12 + 2 . 8 ) + 1
= 16 . 2 + 2 . ( 12 + 16 ) + 1
= 16 . 2 + 2 . 28 + 1
= 2 . ( 16 + 28 ) + 1
= 2 . 44 + 1
= 88 + 1
= 85
Hôm qua mình nhầm :
b)25 + 2 . {12 + 2 .[3 . (5 - 2) + 1} + 1
= 32 + 2 . [12 + 2 . ( 3 . 3 + 1 )] + 1
= 32 + 2 . [ 12 + 2 . ( 9 + 1 )] + 1
= 32 + 2 . ( 12 + 2 . 10 ) + 1
= 32 + 2 . ( 12 + 20 ) + 1
= 32 + 2 . 32 + 1
= 32 . ( 1 + 2 ) + 1
= 32 . 3 = 96 + 1 = 97