- =25(2940+130572)-2424:6*25=25*133512-10100=3337800-10100=3327700
- =1904+152-93-(9500-8045)=1904+152-93-1455=508
3. =121+150(203+576):(2932-(2901-119))=121+150*779(2932-2782)=121+150*779:150=121+779=90
4.=41348-17/21*1/28+503-32005=9846-17/588=5789431/588 (9845 571/588)
5.=4500+218*102-9159=4500+22236-9159=17577
6.=14343-9659+1680-8=6356