Question

решите уравнение
5[х]+1=7

Answer 1

$\displaystyle \tt 5|x|+1=7\\\displaystyle \tt 5|x|=7-1\\\displaystyle \tt 5|x|=6\\\displaystyle \tt |x|=6\div5\\\displaystyle \tt |x|=1,2\\\\\displaystyle \tt \bold{x_1=1,2}\\\displaystyle \tt \bold{x_2=-1,2}$