tính : (-50+19-143) - (-79+25+48)
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
(-50 + 19 + 143)-(-79 + 25 +48)
= (-31 + 143 ) - (-54 + 48 )
= 112 - (-6)
= 112 + 6
= 118
\(\left(-50+19+143\right)-\left(-79+25+48\right)\)
\(=-50+19+143+79-25-48\)
\(=-50-25+\left(79-48+19\right)+143\)
\(=-75+50+143\)
\(=-25+143\)
\(=118\)
![](https://rs.olm.vn/images/avt/0.png?1311)
7: =-1+8=7
6: \(=-\left(8\cdot125\right)\cdot\left(2\cdot5\right)\cdot\left(25\cdot4\right)=-1000000\)
5: =-50+19+143+79-25-48
=-75+98+95
=23+95
=118
4: =37x9+17x9-35x9-35x11
=18+153-385
=-214
![](https://rs.olm.vn/images/avt/0.png?1311)
3: =187-23-20+180
=367-43
=324
4: \(=37\cdot9+17\cdot9-35\cdot9-35\cdot11=19\cdot9-385\)
\(=171-385=-214\)
5: =-50+19+143+79-25-48
=-75+94+95
=20+94
=114
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(-50+19+143\right)-\left(79+25+48\right)\)
\(=-50+19+143-79-25-48\)
\(=-31+143-79-25-48\)
\(=112-79-25-48\)
\(=33-25-48\)
\(=8-48\)
\(=-40\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(-50+19+143\right)-\left(-79+25+48\right)\\ =112-\left(-6\right)\\ =112+6\\ =118\)
=-50+19+143+79-25-48
=143-75+98-48
=143-75+50
=143-25
=118
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