Ta có:

4116 / 10290 = 7.7.7.712 - 7.2 / 7.7.7.7 30-7.5

                   = 12-2 / 30-5

                  = 10 / 25 

                = 2 / 5

  nhớ k cho mình nha

câu 

này =2/5 

k mk nha

7.7.7.7.12 -2.7 /  7.7.7.7.30- 7.5 nha mình quên dấu nhân

A=4102/10255<=>2051*2/2051*5<=>A=2/5

B=2828/4242<=>1414*2/1414*3<=>B=2/3

ủng hộ nha mn
 

\(H=\frac{4116-14}{10290-35}=\frac{14.294-14}{35.294-35}=\frac{14.\left(294-1\right)}{35.\left(294-1\right)}=\frac{14.293}{35.293}=\frac{2}{5}\)
\(K=\frac{29.101-101}{2.19.101+4.101}=\frac{101.\left(29-1\right)}{101.\left(38+4\right)}=\frac{28}{42}=\frac{2}{3}\)

\(I=\frac{1313-1717}{303}=\frac{13.101-17.101}{3.101}=\frac{101.\left(13-17\right)}{3.101}=\frac{-4}{3}\)

\(M=\frac{12-24.3}{1-35}=\frac{12-12.2.3}{-34}=\frac{12.\left(1-6\right)}{-34}=\frac{-60}{-34}=\frac{30}{17}\)

\(H\)\(=\) \(\frac{4116-14}{10290-35}\)

       \(=\) \(\frac{4102}{10255}\) 

       \(=\) \(\frac{4102:2051}{10255:2051}\) 

       \(=\) \(\frac{2}{5}\) 

\(K=\frac{2929-101}{2.1919+404}\)

   \(=\) \(\frac{2828}{4242}\) 

   \(=\) \(\frac{2828:1414}{4242:1414}\) 

   \(=\) \(\frac{2}{3}\)  

\(M=\frac{12-24.3}{1-35}\)

    \(=\) \(\frac{-60}{-34}\)

     \(=\) \(\frac{60}{34}\) 

      \(=\) \(\frac{30}{17}\)

:D

\(H=\frac{14\cdot294-14}{35\cdot294-35}=\frac{14\cdot\left(294-1\right)}{35\cdot\left(294-1\right)}=\frac{14}{35}=\frac{2}{5}\)

\(K=\frac{29\cdot101-101}{2\cdot19\cdot101+4\cdot101}=\frac{101\cdot\left(29-1\right)}{101\cdot\left(2\cdot19+4\right)}=\frac{28}{42}=\frac{2}{3}\)

\(I=\frac{13\cdot101-17\cdot101}{3\cdot101}=\frac{101\cdot\left(13-17\right)}{3\cdot101}=\frac{-4}{3}\)

\(M=\frac{12-72}{-34}=\frac{-60}{-34}=\frac{15}{17}\)

=4102/10255

=(4102:2051)/(10255:2051)

=2/5

4116 - 14/ 10290 - 35

= 4102/10255

= 4102 : 2051/10255 : 2051

= 2/5

A=\(\frac{14.294-14}{35.294-35}=\frac{14.\left(294-1\right)}{35.\left(294-1\right)}=\frac{14}{35}=\frac{2}{5}\)

ƯCLN(4116,35)=7

ƯCLN(14,10290)=14

Nên rút gọn thành: 588-1/735-5

\(\frac{4116-14}{10290-35}=\frac{2}{5}\)

A=4116-14/10290-35
=[14 x ( 294 -1 )]/[35 x (294-1)]
= 14/35

B =2929-101/2.1919+404
= [101 x (291-1)] / [101 x 38 + 101 x 4)]
= [ 101x (29 -1)] / [ 101 x (38+4)
= (29-1) / (38+4)
= 28/42 = 2/3

A=4116-14/10290-35=14.294-14.1/35.294-35.1=14.(291-1)/35.(294-1)=14/35=14:7/35:7=2/5

B=2929-101/2.1919+404=101.29-101.1/2.19.101+4.101=101.(29-1)/101.(2.19+4)=28/42=28:14/42:14=2/3

de et ngu nhu bo y ko lam dc 

A= 4116-14

    10290-35

= 294.14 - 14

  35.294 - 35

= 294 . 14

  294 . 35 ghạch 2 số 294

=14

  35

= 2

  5

 phàn B tương tự

6/3=12/6

B)=0,4 HAY2/5

\(\frac{4102}{10255}\)=\(\frac{2}{5}\)