Question

20^3x=20¹³:(4.5)⁴

tìm x nhé

 

Answer 1

\(\Leftrightarrow20^{3x}=20^{13}:20^4=20^9\)

=>3x=9

hay x=3

Answer 2

\(20^{3x}=20^{13}:\left(4.5\right)^4\)

\(20^{3x}=20^{13}:20^4\)

\(20^{3x}=20^{13-4}\)

\(20^{3x}=20^9\)

`3x=9`

`x=9:3`

`x=3`

Vậy `x=3`

Answer 3

`20^(3x) = 20^13 : (4.5)^4`

`=> 20^(3x)=20^13 : 20^4`

`=> 20^(3x) = 20^9`

`=> 3x=9`

`=>   x = 9 : 3`

`->   x  = 3`