bằng 264

(-50 + 19 + 143)-(-79 + 25 +48)

= (-31 + 143 ) - (-54 + 48 )

= 112 - (-6)

= 112 + 6

= 118

 \(\left(-50+19+143\right)-\left(-79+25+48\right)\) 

\(=-50+19+143+79-25-48\)

\(=-50-25+\left(79-48+19\right)+143\) 

\(=-75+50+143\)

\(=-25+143\) 

\(=118\)

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

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

3 ; 324

4 ; -214

5 ; 118

6 ; - 1 000 000

7 ; 7

học tốt

-168 chuẩn luôn tick nha

[-50+19+143]-[-79+25+48]=118

=-50+19+143-79-25-48

=-40

\(\left(-50+19+143\right)-\left(79+25+48\right)\)

\(=-50+19+143-79-25-48\)

\(=-31+143-79-25-48\)

\(=112-79-25-48\)

\(=33-25-48\)

\(=8-48\)

\(=-40\)

\(\left(-50+19+143\right)-\left(79+25+48\right)\)

\(=-50+19+143-79-25-48\)

\(=-34+64-\left(-23\right)\)

\(=53\)

hok tốt

\(\left(-50+19+143\right)-\left(-79+25+48\right)\\ =112-\left(-6\right)\\ =112+6\\ =118\)

=-50+19+143+79-25-48

=143-75+98-48

=143-75+50

=143-25

=118

a) 5*(-3^2)-14*(-8)+(-40)=5*9-(-48)+(-40)=45+48-40=53

b)(-50+19+143)-(-79+25+48)=-50+19+143+79-25-48=218