Question

Решите уравнение 2х+3*2^х-3=22

Answer 1

$2^{x} +3* 2^{x-3} =22$
$2^{x} +3* frac{ 2^{x} }{8} =22$
$1+ frac{3}{8} = frac{22}{ 2^{x} }$
$frac{11}{8} = frac{22}{ 2^{x} }$
$11* 2^{x} =8*22$
$2^{x} =16$
$2^{x} = 2^{4}$
$x=4$