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\(\left(x+1005\right)+a=525+\left(1005+a\right)\)
\(x+1005+a=525+1005+a\)
\(x+a-a=525+1005-1005\)
\(x=525\)
vay \(x=525\)
\(\left(b+4672\right)+x=b+4674\)
\(b+4672+x-b=4674\)
\(x=4674-4672\)
\(x=2\)
vay \(x=2\)
a ) ( x + 1005 ) + a = 525 + ( 1005 + a )
( x + 1005 ) + a = ( 525 + 1005 ) + a
( x + 1005 ) + a = 1530 + a
x + a + a = 1530 - 1005
x,a = 525
b ) ( b + 4672 ) + x = b + 4674
b + 4672 + x = b + 4674
b + b + x = 4674 - 4672
b,x = 2
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\(x\cdot5=1005-35\)
=>\(x\cdot5=970\)
=>\(x=\dfrac{970}{5}=194\)
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1995 + 1027 + 1005 + 973
= (1995 + 1005) + (1027 + 973)
= 3000 + 2000
= 5000
= ( 1995 + 1005 ) + (1027 + 973 )
= 3000 + 2000
= 5000
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Lời giải:
$2010\times 4+1005\times 190+2019$
$=1005\times 2\times 4+1005\times 190+2019$
$=1005\times 8+1005\times 190+2019$
$=1005\times (8+190)+2019=1005\times 198+2019=201009$
1005 x 2 + 1005 x 7 + 1005
= 1005 x 2 + 1005 x 7 + 1005 x 1
= 1005 x ( 2 + 7 + 1 )
= 1005 x 10
= 10050
1005x(2+7+1)=1005x10=10050