Răspuns :

Cocirmariadenisid
( 4 / 9 ) ˣ = ( 3 / 2) ⁻⁵

( 3 / 2)⁻⁵ = ( 2 / 3)⁵ 

( 4 / 9 ) ˣ = ( 2² / 3²) ˣ  = ( 2 / 3) ²ˣ = ( 2 / 3)⁵  

= >  2 x = 5   = > x = 5 / 2 = 2,5
(4/9)ˣ = (3/2)⁻⁵

(2/3)²ˣ = (2/3)⁵

2x = 5

x = 2.5

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