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\(A=\frac{65+891+135+909}{731-47+69-253}\)
\(A=\frac{65+135+891+909}{731+69-47-253}\)
\(A=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)
\(A=\frac{200+1800}{800-300}\)
\(A=\frac{2000}{500}=4\)
A = \(\frac{65+891+135+909}{731-47+69-253}\)
A = \(\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)
A = \(\frac{200+1800}{800-300}\)
A = \(\frac{2000}{500}\)
A = 4
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(C=\frac{65+891+135+909}{731-47+69-253}\)
\(C=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)
\(C=\frac{200+1800}{800-300}\)
\(C=\frac{2000}{500}=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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a)2006x125+1000=250,75x125x8+1000=250,75x1000+1000=1000(250,75+1)=1000x251,75=251750
731-47+69-253=(731+69)-(47+253)=800-300=500
b)3,54x73+0,46x25+3,54x26+0,46x75+3,54
=3,54(73+26+1)+0,46(25+75)
=3,54x100+0,46x100
=354+46=400
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0,35 × 135 - 35% × 35
= 0,35 × 135 - 0,35 × 35
= 0,35 × (135 - 35)
= 0,35 × 100
= 35
\(0,35\times135-35\%\times35\)
\(=0,35\times135-0,35\times35\)
\(=0,35\times\left(135-35\right)\)
\(=0,35\times100\)
\(=35\)