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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
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\(C=\frac{65+891+135+909}{731-47+69-253}\)
\(C=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)
\(C=\frac{200+1800}{800-300}\)
\(C=\frac{2000}{500}=4\)
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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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\(\frac{71}{69}+\frac{60}{47}+\frac{67}{69}+\frac{34}{47}=\left(\frac{71}{69}+\frac{67}{69}\right)+\left(\frac{60}{47}+\frac{34}{47}\right)=\frac{138}{69}+\frac{94}{47}=2+2=4\)
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a) ( 735 - 135 ) + ( 243 - 143 ) = 600 + 100
= 700
b) 31 x ( 118 - 48 ) = 31 x 70
= 2170
c) ( 25 x 32 ) x7 = 800 x 7
= 2400
d ) 47 x ( 63 + 47 ) - 38
= 47 x 100 - 38
= 4700 - 38
=4662
h ) ( 53 + 47 ) x ( 39 + 21 ) = 100 x 60
= 6000