-(-229)+(-219)-401+12
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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)
- (-229) + (-219) – 401 + 12 = (229 – 219) –( 401 – 12) = 10 – 389 = -379
![](https://rs.olm.vn/images/avt/0.png?1311)
-(-229 ) + (-219 ) - 401 + 12
= 209 - 219 - 401 + 12
= -10 - 401 + 12
= -411 + 12
= - 399
300 - (-200) - (-120) + 18
= 300 + 200 + 120 + 18
= 500 + 120 + 18
= 620 + 18
= 638
- -(-229 ) + (-219 ) - 401 + 12
= 10 - 401 + 12
= -391 + 12
= -379
- 300 - (-200) - (-120) + 18
= 500 + 120 + 18
= 620 + 18
= 638
![](https://rs.olm.vn/images/avt/0.png?1311)
Trl:
d) \(555-\left(-33\right)-100-80\)
\(=588-20\)
\(=568\)
e) \(-\left(-229\right)+\left(-219\right)-401+12\)
\(=10-413\)
\(=403\)
f) \(300-\left(-200\right)-\left(-120\right)+18\)
\(=500-\left(-102\right)\)
\(=602\)
Hc tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
8 + ( - 7 ) + ( - 10 ) = - 9
229 + 219 + 401 - 12 = 837
300 + 200 + 120 + 18 = 638
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(-8\right)+\left(-7\right)+\left(-10\right)\)
\(=-8-7-10\)
\(=-15-10=-25\)
\(\left(-229\right)+219-401+12\)
\(=\left(219-229\right)-401+12\)
\(=-10-401+12\)
\(=-399\)
\(555-\left(-333\right)-100-80\)
\(=555+333-100-80\)
\(=888-100-80\)
\(=780-80=700\)
\(300-\left(-200\right)-\left(-120\right)+18\)
\(=300+200+120+18\)
\(=500+120+18\)
\(=620+18\)
\(=638\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) = (-15)+(-10)
= -25
b) = (-222)-100-80
= (-322)-80
= -402
c) = 229+219-401+12
= 448-401+12
=47+12
= 59
d) = 500-(-120)+18
= 620+18
= 638
![](https://rs.olm.vn/images/avt/0.png?1311)
a, [ (-8) + (-7)] + (-10)
= (-8)+ (-7 ) +(-10)
= (-15)+ (-10)
= -25
b, -[ (-229) + (-219)] - 401 + 12
= (-229) - (219) - 401 + 12
= (-229) + 219 + (-401)+ 12
= (- 10) + (-401)+12
= (- 411)+ 12
= -399
c, 300 - (-200)- (-120) + 18
= 300 + 200 + 120 + 18
= 500 + 120 + 18
= 620 + 18
= 638
d, (-326) - (115 - 326)
= (-326) - 115 + 326
= (-326)+ (-115) +326
= [(-326 + 326] + (- 115)
= 0 + (-115)
= -115
=229+(-219)-401+12
=10-401+12
=-391+12
=-379
-(-229)+(-219)-401+12
=10-401+12
=-391+12
=-379