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Bài làm
0,5 x 4,04 x 20
= ( 0,5 x 20 ) x 4,04
= 10 x 4,04
= 40,4
# Chúc bạn học tốt #
0,5 x 4,04 x 20
= ( 0,5 x 20 ) x 4,04
= 10 x 4,04
= 40,4
hok tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : 11,209+x<160459
suy ra x<160459-11,209
suy ra x<160447,791
mà x là số tự nhiên suy ra x<160447 suy ra x lớn nhất la 160447
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a) 2014 x 7 + 2 x 2014 + 2014
= 2014 x ( 7+2+1)
= 2014 x 10 = 20140
b) 4/7 - 9/7 - 2/7 x 4
= (4-9-2) / 2 x 4
= (-7) : 2 x 4 = -7 x 2 = -14
a. 2014x7+2x2014+2014
=2014x7+2x2014+2014x1
=2014x(2+7+1)
=2014x10
=20140
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(123/233+1995/2015+121212/242424)*(1/4-1/5-1/20)
=(123/233+399/403+1/2)*(5/20-4/20-1/20)
=(123/233+399/403+1/2)*0
=0
=8364861346377613674163463961267236319639692649461292639463296366313713676767676677676367363636343634673463367436746767343873467647
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\(135.66-55.135-135-27.50\)
\(=135.66-135.55-135-1350\)
\(=135.66-135.55-135.1-135.10\)
\(=135.\left(66-55-1-10\right)\)
\(=135.0\)
\(=0\)
135 x 66 - 55 x 135 - 135 - 27 x 50
= 135 x (66 - 55 - 1 - 10)
= 135 x 0 = 0
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A = (1 - \(\frac{1}{2}\)) x (1 - \(\frac{1}{3}\)) x (1 - \(\frac{1}{4}\)) x (1 - \(\frac{1}{5}\)) x ... x (1 - \(\frac{1}{2014}\)) x (1 - \(\frac{1}{2015}\))
A = \(\frac{1}{2}\)x \(\frac{2}{3}\) x \(\frac{3}{4}\) x \(\frac{4}{5}\) x ... x \(\frac{2013}{2014}\)x \(\frac{2014}{2015}\)
A = \(\frac{1x2x3x4x...x2013x2014}{2x3x4x5x...x2014x2015}\)
A = \(\frac{1}{2015}\)
Vậy A = \(\frac{1}{2015}\)
~~~
9,04x11,5-11,4x9,04
=9,04x(11,5-11,4)
=9,04x0,1
=90,4