Question

$7^x - 7 (^x-1) =6$

Answer 1

$7^x-7^{x-1}=6 \ \ 7^x- frac{ 7^{x}}{7}=6 \ \ 7^x(1- frac{1}{7} )=6 \ \ 7^x* frac{6}{7} =6 \ \ 7^x=6: frac{6}{7}=6* frac{7}{6} =7 \ \ 7^x= 7^1 \ x=1 \ \ OTBET: 1$