42

100%

Ta có: |40 - 37| - |13 - 52|

= 3 - 39

= -36

= |3| - |-39| = 3 - 39 = -36

a)-|-33|+(-12)+18+|45-40|-57

=-33-12+18+|5|-57

=-45+18+5-57

=-27+5-57

=-22-57

=-79

b)|40-37|-|13-52|

=|3|-|-39|

=3-39

=-36

a)|0|+|45|+(-|-455)|+|796|

= 0+45+(-455)+796

=45-455+796

=-410+796

=386

b)-|-33|+(-12)+18+|45-40|-57

=-33-12+18+|5|-57

=-45+18-5-57

=-33-5-57

=-38-57

=-95

c)|40-37|-|13-52|

=|13|-|-39|

=13-39

=-38

|0| + |45| + (-|-455)| + |-796|

= 0 + 45 - 455 + 796

= 386

-|-33 | + (-12) + 18 + |45 - 40| - 57

= -33 - 12 + 18 + 5 - 57

= -79

|40 - 37| - |13 - 52|

= |3| - |-39|

= 3 - 39

= -36

\(\text{(-123) +|–13| +(-7)}\)

\(\text{= (-123) + 13 + (-7)}\)

\(\text{= (-110) + (-7)}\)

\(=\text{(-117)}\)

b

mình nghĩ là bằng1

9.|40-37|-|2.13-52|

=9.|3|-|26-52|

=9.3-|-26|

=27-26=1

bằng 53

=26x74+26x26-40x58

=26x100-100x23.2

=100x2.8

=280

=1605