Question

Rezolvati in multimea R ecuatia: ( \frac{4}{9} )^{5-2x} =( \frac{27}{8} )^{-7}
si sa-mi explicati fiecare pas ! dau puncte multe si coroana
multumesc frumos

Answer 1

$( \frac{4}{9} ) ^{5-2x} =( \frac{8}{27} ) ^{7} ;( \frac{2}{3} ) ^{2(5-2x)} =( \frac{2}{3} ) ^{3*7}$
=>10-4x=21
        -4x=21-10
        -4x=11
           $x=- \frac{11}{4}$