Question

B= 70.( 131313/565656 + 131313/727272 + 131313/909090)

Tính B: Có cách làm !

Answer 1

B=70.\(\left(\frac{13.10101}{56.10101}+\frac{13.10101}{72.10101}+\frac{13.10101}{90.10101}\right)\)

B=70.\(\left(\frac{13}{56}+\frac{13}{72}+\frac{13}{90}\right)\)

B=70.\(\frac{39}{70}\)=39

ks nha

Answer 2

B= 70.( 131313/565656 + 131313/727272 + 131313/909090)

B = 70 * ( 13/56 + 13/72 + 13/90)

B = 70* 0,1464....

B= 10,254050...

Answer 3

olm.vn/hoi-dap/question/520458.html

Answer 4

olm.vn/hoi-dap/question/520458.html

Answer 5

tinh C=70(131313|565656+131313|727272

Answer 6

B=70.\left(\frac{13.10101}{56.10101}+\frac{13.10101}{72.10101}+\frac{13.10101}{90.10101}\right)( 

56.10101

13.10101

​ 

 + 

72.10101

13.10101

​ 

 + 

90.10101

13.10101

​ 

 )

 

B=70.\left(\frac{13}{56}+\frac{13}{72}+\frac{13}{90}\right)( 

56

13

​ 

 + 

72

13

​ 

 + 

90

13

​ 

 )

 

B=70.\frac{39}{70} 

70

39

​ 

 =39

Answer 7

B=70.\left(\frac{13.10101}{56.10101}+\frac{13.10101}{72.10101}+\frac{13.10101}{90.10101}\right)( 

56.10101

13.10101

​ 

 + 

72.10101

13.10101

​ 

 + 

90.10101

13.10101

​ 

 )

 

B=70.\left(\frac{13}{56}+\frac{13}{72}+\frac{13}{90}\right)( 

56

13

​ 

 + 

72

13

​ 

 + 

90

13

​ 

 )

 

B=70.\frac{39}{70} 

70

39

​ 

 =39