Question

tính hợp lí nếu có thể:

-/-5/+(-19)+(+18)+/11-4/-57

Answer 1

-I-5I+(-19)+18+I11-4I-57

=-5+(-19)+18+7-57

=-24+18+7-57

=-6+7-57

=1-57

=-56 

Answer 2

\(-\left|-5\right|+\left(-19\right)+\left(+18\right)+\left|11-4\right|-57\)

\(=-5+\left(-19\right)+18+7-57\)

\(=-24+18+\left(7-57\right)\)

\(=-6+\left(-50\right)\)

\(=-56\)

Answer 3

- | - 5 | + ( - 19 ) + ( + 18 ) + | 11 - 4 | - 57

= - 5 + ( - 19 ) + 18 + | 7 | - 57

= - 24 + 18 + 7 - 57

= - 6 + 7 - 57

= 1 - 57

= - 56