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![](https://rs.olm.vn/images/avt/0.png?1311)
303 - 3 . {[655 - (18:2+1).43 + 5]} : 100
= 303 - 3 . {[655 - (9+1).64 + 5]} : 1
= 303 - 3 . {[655 - 10.64 + 5]} : 1
= 303 - 3 . {[655 - 640 + 5]} : 1
= 303 - 3 . {15 + 5} : 1
= 303 - 3 . 20 : 1
= 303 - 60 : 1
= 303 - 60
= 243
câu a sai đề hay sao rồi bn ơi
303-3{[655-(18:2+1).4^3+5]}:10^0
=303-3{[655-(9+1).64+5]}:1
=303-3(655-10.64+5):1
=303-3(655-640+5):1
=303-3.20:1
=303-60
=243
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 80 - 4 . 5 2 - 3 . 2 3
= 80 – (4.25 – 3.8)
= 80 – 76 = 4
b, 5 6 : 5 4 + 2 3 . 2 2 - 1 2018
= 5 2 + 2 5 - 1
= 25 + 32 – 1 = 56
c, [36.4 – 4. 82 - 7 . 11 2 ]:4 – 2019 0
= (144 – 4. 5 2 ):4 – 1
= (144 – 100):4 – 1
= 11 – 1 = 10
d, 303 – 3.{[655 – (18:2+1). 4 3 +5]}: 10 0
= 303 – 3.(655 – 10.64 + 5):1
= 303 – 10 = 293
![](https://rs.olm.vn/images/avt/0.png?1311)
303-3. {[655-(18:2+1).43+5]}:100
=303-3.{[655-(18:2+1).64+5]}:1
=303.3{[655-(9+1).64+5]}:1
=303.3{[655-10.64+5]}:1
=303.3{[655-640+5]}:1
=303.3{[15+5]}:1
=303.3.20:1
=909.20:1
=18180:1
=18180
![](https://rs.olm.vn/images/avt/0.png?1311)
Cho mình câu chả lời sớm nhất vào 4h30 chiều ngày 28/9/2021
![](https://rs.olm.vn/images/avt/0.png?1311)
1) 5 + (-4) = 1
2) (-8) + 2 = -6
3) 8 + (-2) = 6
4) 11 + (-3) = 8
5) (-11) + 2 = -9
6) (-7) + 3 = -4
7) (-5) + 5 = 0
8) 11 + (-12) = -1
9) (-18) + 20 = 2
10) (15) + (-12) = 3
11) (-17) + 17 = 0
12) 16 + (-2) = 14
13) (30) + (-14) = 16
14) (-19) + 20 = 1
15) (-18) + 15 = -3
16) (10) + (-6) = 4
17) (-28) + 14 = -14
18) 15 + (-30) = -15
19) (15) + (-4) = 11
20) (-21) + 11 = -10
21) 8 + (-22) = -14
22) (-15) + 4 = -11
23) (-3) + 2 = -1
24) 17 + (-14) = 3
25) 17 + (-14) = 3
![](https://rs.olm.vn/images/avt/0.png?1311)
a: =-1/3+1/3=0
b: \(=\dfrac{4}{11}\left(-\dfrac{2}{7}-\dfrac{4}{7}-\dfrac{1}{7}\right)=\dfrac{4}{11}\cdot\left(-1\right)=-\dfrac{4}{11}\)
c: \(=10+\dfrac{5}{9}-3-\dfrac{5}{7}-4-\dfrac{5}{9}=3-\dfrac{5}{7}=\dfrac{16}{7}\)
d: \(=\dfrac{1}{3}+\dfrac{7}{4}-\dfrac{7}{4}+\dfrac{4}{5}=\dfrac{1}{3}+\dfrac{4}{5}=\dfrac{5+12}{15}=\dfrac{17}{15}\)
a: =-1/3+1/3=0
b: =411(−27−47−17)=411⋅(−1)=−411=411(−27−47−17)=411⋅(−1)=−411
c: =10+59−3−57−4−59=3−57=167=10+59−3−57−4−59=3−57=167
d: =13+74−74+45=13+45=5+1215=1715
a) 80-(4.52-3.23)=80-100+24=4
b)[36.4-4.(82-7.11)2]:4-20190
={4.[36-(82-7.11)2]}:4-1
=[36-(82-7.11)2]-1
=11-1=10
c)56:54+23.22-12018
=52+25-1
=25+32-1=56
d)303-3.{[655-(18:2+1).43+55]}:100
=303-3.[(655-9-1).43+55]:1
=303-3[655-640+5]
=303-3(20)
=303-60=243