15.(17-111)-17.(222+15)
=15.17-15.111-17.2.111-17.15
=(15.17-15.17)-111.(15+17.2)
=0-111.49
=-5439
15 x (17 - 111) - 17 x (222 + 15)
= 15 x (17 - 111) - 15 x (222 + 15) - 2 x (222 + 15)
= \(15.\left[\left(17-111\right)-\left(222+15\right)\right]-2.\left(222+15\right)\)
= \(15.\left[17-111-222-15\right]-2.\left(222+15\right)\)
= \(15.\left[-331\right]-2.237\)
= \(-4965-474\)
= \(-5439\)
có một chút sự sai nhẹ!!!
nhưng hãy 
nhé.
15.(17-111)-17.(222+15)
=15.17-15.111-17.222-17.15
=(15.17-17.15)-(15.111+17.222)
=-[15.111+17.(111+111)]
=-(15.111+17.111+17.111)
=-111(15+17+17)
=-111.49
=-5439
15x( 17- 111)- 17x( 222+ 15).
= 255 - 1665 - 3774 - 255
= - 1665 - 3774
= - 5439
15.(17-111)-17.(222+15)
=15.17-15.111-17.222-17.15
=(15.17-17.15)-(15.111+17.222)
=-[15.111+17.(111+111)]
=-(15.111+17.111+17.111)
=-111(15+17+17)
=-111.49
=-5439
Trl :
Bạn kia làm đúng rồi nhé !
Học tốt nhé bạn @
