(-238+742)-42= 504-42= 462-(-356+145)-56= -(-211)-56= 211-56= 155(795-900)-795= 665-900-665= -900-(795-999)-990= -(-6)-0= 6(-48+101-29)-101+29 = 24-101+29 = -48-(-79-39+81)+81-39= -(-97)+81-39= 97+81-39= 139
(-238+742)-42= 504-42= 462
-(-356+145)-56= -(-211)-56= 211-56= 155
(795-900)-795= 665-900-665= -900
-(795-999)-990= -(-6)-0= 6
(-48+101-29)-101+29 = 24-101+29 = -48
-(-79-39+81)+81-39= -(-97)+81-39= 97+81-39= 139