Question

Tìm x:

 25 : X = 16 :10             5,2 x X = 70 - 12,8

Answer 1

\(25:x=16:10\)
\(\Rightarrow25:x=1,6\)
\(\Rightarrow x=25:1,6\)
\(\Rightarrow x=15,625\)

\(5,2\times x=70-12,8\)
\(\Rightarrow5,2\times x=57,2\)
\(\Rightarrow x=57,2:5,2\)
\(\Rightarrow x=11\)

Answer 2

a: =>25:x=1,6

hay x=15,625

b: =>5,2x=57,2

hay x=11

Answer 3

 25 : X = 16 :10

\(\Rightarrow25:x=1,6\\ \Rightarrow x=15,625\)            

5,2 x X = 70 - 12,8

\(5,2\times x=57,2\\ \Rightarrow x=11\)

Answer 4

25 : X = 6 : 10

= 25 : X = 1,6

= 25 : 1,6

= 15,625

5,2 x X = 70 - 12,8

= 5,2 x X = 57,2

=57,2 : 5,2 

= 11