Question

Tính nhanh:

(43-863)-(137-57)

Answer 1

(43-863)-(137-57)=43-863-137+57=(43+57)-(863+137)=100-1000=-900

Answer 2

=-820-80

=740 

Tick nha

Answer 3

43-863-137+57

=43+57+(-863)-137

=100-863-137

=-900

tick nhé

Answer 4

= ( 137 + 863 ) -  ( 43 + 57 ) = 900