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a.
12054: ( 15 + 67 )
= 12054 : 82
= 147
29150-136x201
=29150-27336
=1814
b) 9700:100+36x12
=97+432
=529
(160x5-25x4):4
=(800-100):4
= 700:4
=175
k mink nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
\(12054:\left(25+57\right)-67\)
\(=12054:82-67\)
=147-67
=80
\(12054:\left(25+57\right)-67\)
\(=12054:82-67=147-67=80\)
![](https://rs.olm.vn/images/avt/0.png?1311)
12054:(15+67)=12054:82=147
29150-136*201=29150-27336=1814
9700:100+36*12=97+432=529
(160*5-25*4):4=(800-100):4=175
Mk xong trước ha (20:07 )
12054 : (15+ 67)
=12054:82=147
29150 - 136 * 201
=29150-27336
=1814
9700 : 100 +36 *12
=97+432=529
![](https://rs.olm.vn/images/avt/0.png?1311)
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@k nha
![](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)
a) 12054 : (45 + 37) = 12054 : 82 = 147
b) 30284 : (100 – 33) = 30284 : 67 = 452
![](https://rs.olm.vn/images/avt/0.png?1311)
b: =15/31(34/63-11/21)=15/31x1/63=5/651
a: \(=\dfrac{67}{63}\cdot5+\dfrac{11}{31}\cdot\dfrac{5}{7}=5\left(\dfrac{67}{63}+\dfrac{11}{31\cdot7}\right)=\dfrac{10880}{1953}\)
a)67/63 x 15/3 + 15/31 x 11/21
Thiếu đề
b)15/31 x 34/63 - 11/21 x 15/31
=15/31 x ( 34/63 -11/21)
= 15/31 x 1/63= 5/651
![](https://rs.olm.vn/images/avt/0.png?1311)
b: =15/31(34/63-11/21)=15/31x1/63=5/651
a: \(=\dfrac{67}{63}\cdot5+\dfrac{11}{31}\cdot\dfrac{5}{7}=5\left(\dfrac{67}{63}+\dfrac{11}{31\cdot7}\right)=\dfrac{10880}{1953}\)
b: =15/31(34/63-11/21)=15/31x1/63=5/651
a: =67/63⋅5+11/31⋅5/7=5(67/63+11/31⋅7)=10880/1953
12054:(15+67)=147
..............học tốt..............
Bài làm
* Cách 1:
12054 : ( 15 + 67 )
= 12054 : 82
= 147
* Cách 2:
12054 : ( 15 + 67 )
= 12054 : 15 + 12054 : 67
= 12054 : ( 15 + 67 )
= 12054 : 83
= 147
# Cách 2 mik k nghĩ ra đc cách khác #