4332 + 6321 - 3053

= 10653 - 3053

= 7600

ủng hộ nha bn!

57 x 76 + 43 x 147 - 43 x 71

=57x76+43.(147-71)

=57x76+43x76

=(57+43)x76=100x76=7600

Kết quả phép tính trên là:

57 x 76 + 147 - 43 x 71 = 1426

Đáp số: 1426

57 x 76 + 147 - 43 x 71

=4332+147-3053

=4479-3053

=1426

Vậy...

1 : x : x + 147 = 1051

=> 1 : x : x = 1051 - 147 = 904

=> x² = \(\frac{1}{904}\)

=> x = + \(\frac{1}{2\sqrt{226}}\)

= 2016 x 0,24 + 0,75 x 2016 + 2016 x 0,01 

= 2016 x ( 0,24 + 0,75 + 0,01 ) 

= 2016 x 1 

= 2016

=2016 x 0,24 + 2016 x 0,75 + 2016 x 0,01

=2016 x ( 0,24 + 0,75 + 0,01 )

=2016 x 1

=2016

\(\frac{\frac{1}{2\times4}+\frac{1}{4\times6}+\frac{1}{6\times8}+...+\frac{1}{98\times100}}{y}=\frac{147}{50}\)

\(\frac{\frac{1}{2}\times\left(\frac{2}{2\times4}+\frac{2}{4\times6}+\frac{2}{6\times8}+...+\frac{2}{98\times100}\right)}{y}=\frac{147}{50}\)

\(\frac{\frac{1}{2}\times\left(\frac{1}{2}-\frac{1}{4}+\frac{1}{4}-\frac{1}{6}+\frac{1}{6}-\frac{1}{8}+...+\frac{1}{98}-\frac{1}{100}\right)}{y}=\frac{147}{50}\)

\(\frac{\frac{1}{2}\times\left(\frac{1}{2}-\frac{1}{100}\right)}{y}=\frac{147}{50}\)

\(\frac{\frac{1}{2}\times\frac{49}{100}}{y}=\frac{147}{50}\)

\(\frac{49}{200}:y=\frac{147}{50}\)

\(y=\frac{49}{200}:\frac{147}{50}\)

\(y=\frac{1}{12}\)

a, 315-x=327-264

<=> 315-x=63

<=> x=315-63

<=>x=252

b, 147-x=10 x 5

<=> 147-x=50

<=> x= 147-50

<=> x=97

\(\left(315-x\right)+264=327\)

\(\left(315-x\right)=63\)

\(x=315-63\)

\(x=252\)

\(\left(147-x\right):5=10\)

\(\left(147-x\right)=50\)

\(x=147-50\)

\(x=97\)

\(=\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+...+\dfrac{1}{145}-\dfrac{1}{147}\)

\(=\dfrac{1}{5}-\dfrac{1}{147}=\dfrac{142}{735}\)

\(\dfrac{2}{5.7}+\dfrac{2}{7.9}+...+\dfrac{2}{145.147}\)

\(=\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+...+\dfrac{1}{145}-\dfrac{1}{147}\)

\(=\dfrac{1}{5}-\dfrac{1}{147}\)

\(=\dfrac{147}{735}-\dfrac{5}{735}\)

\(=\dfrac{142}{735}\)