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5/22 totul la 4x-5 < sau = 4,4 => x=?

Răspuns :

[tex]4,4= \frac{44}{10}= \frac{22}{5}=( \frac{5}{22}) ^{-1} [/tex], ecuatia devine: 
[tex] ( \frac{5}{22}) ^{4x-5}= ( \frac{5}{22}) ^{-1},deci,4x-5=-1,sau,4x=4,solutie,x=1. [/tex]