\(\frac{315}{316}\cdot\frac{316}{314}\cdot\frac{316}{315}\cdot\frac{317}{313}=\frac{315.316.316.317}{316.314.315.313}=\frac{1.1.316.317}{1.314.1.313}=\frac{100172}{98282}\)

Ta có : \(\frac{3}{2}\times\frac{4}{5}\times\frac{2}{3}\)

\(=\frac{3}{2}\times\frac{2}{3}\times\frac{4}{5}=1\times\frac{4}{5}\)

\(=\frac{4}{5}\)

Đơn giản như đang giỡn :

=315.313.316.317/315.314.316.317

=313/314

hok tốt k nhé bạn .

    \(\frac{315}{316}\cdot\frac{313}{314}\cdot\frac{316}{315}\cdot\frac{317}{314}\)

= \(\frac{315\cdot313\cdot316\cdot317}{316\cdot314\cdot315\cdot314}\)

=\(\frac{1\cdot313\cdot1\cdot317}{1\cdot314\cdot1\cdot314}\)(Bước này là bước rút gọn)

= \(\frac{99221}{98596}\)

                                     #Kiều

           \(\frac{19}{13}+\frac{14}{6}+\frac{1}{9}+\frac{4}{6}+\frac{7}{13}+\frac{17}{9}\)

\(=\left(\frac{19}{13}+\frac{7}{13}\right)+\left(\frac{14}{6}+\frac{4}{6}\right)+\left(\frac{1}{9}+\frac{17}{9}\right)\)

\(=\frac{26}{13}+\frac{18}{6}+\frac{18}{9}\)

\(=2+3+2\)

\(=7\)

              \(\frac{315}{316}\times\frac{313}{314}\times\frac{316}{315}\times\frac{317}{314}\)

\(=\left(\frac{315}{316}\times\frac{316}{315}\right)\times\left(\frac{313}{314}\times\frac{317}{314}\right)\)

\(=1\times1,006339\)

\(=1,006339\)

#Chúc bạn học tốt !

#k mình nhé ?

315/316*313/314*316/315*317/313

=315*313*316*317/316*314*315*313

=317/314

Tick cho mik nha

rồi triệt tiêu cho nhau

`@` `\text {Ans}`

`\downarrow`

`315/380 = 1 - 65/380`

`316/380 = 1 - 65/381`

Mà `65/380 > 65/381`

`-> 1 - 65/380 < 1 - 65/381`

`-> 315/380 < 316/381`

`=> -315/380 > -316/381`

315/380=1-65/380

316/381=1-65/381

mà 65/380>65/381

nên 315/380<316/381

=>-315/380>-316/381

Ta có: \(-\frac{315}{380}=\frac{-380+65}{380}=-1+\frac{65}{380}\)

\(-\frac{316}{381}=\frac{-381+65}{381}=-1+\frac{65}{381}\)

mà \(\frac{65}{380}>\frac{65}{381}\) (380<381)

nên \(-\frac{315}{380}>-\frac{316}{381}\)

Ta có: \(-\frac{315}{380}=\frac{-380+65}{380}=-1+\frac{65}{380}\)

\(-\frac{316}{381}=\frac{-381+65}{381}=-1+\frac{65}{381}\)

mà \(\frac{65}{380}>\frac{65}{381}\) (380<381)

nên \(-\frac{315}{380}>-\frac{316}{381}\)

-315/380 = -120015/144780

-316/381 = -120080/144780

Do -120015 > -120080

-120015/144780 > -120080/144780

⇒ -315/380 > -316/381

-(315.4+275)+4.315-(10-275)

=-4.315-275+4.315-10+275

=(-4+4).315+(275-275)-10

=0-0-10=-10

(áp dụng quy tắc  phân phối, chuyển dấu, giao hoán)

- (315 . 4+ 275) + 4. 315- (10 - 275)

=- (1260+ 275) + 4. 315- (-265)

=-1535+ 4. 315- (-265)

=-1535+ 1260- (-265)

=-275- (-265)

=-10