Question

9(х-1)=х+15 дайте ответ

Answer 1

9х-9=х+15 9х-х=9+15 8х=24 х=3

Answer 2

$9(x-1)=x+15 \ \ 9x-9=x+15 \ \ 9x-x=15+9 \ \ 8x=24 \ \ x=3$