Question

3^x-1+3^1+x-3^x=63 por favor ayudanme ???

Answer 1

$3^{x-1}+3^{1+x}-3^{x}=63 \\ \\ 3^{x}*3^{-1}+3^{1}*3^{x}-3^{x}=63 \\ \\ 3^{x}(3^{-1}+3^{1}-1)=63 \\ \\ 3^{x}( \frac{7}{3} )=63 \\ \\ 3^{x}=27 \\ \\ 3^{x}=3^{3} \\ \\ x=3$