Оч срочно помогите!!! 5х+3(3х+7)=35

Question

Оч срочно помогите!!!
5х+3(3х+7)=35

Answer 1

5x+9x+21=35
14x=14
x=14/14=1

Answer 2

5х+3(3х+7)=35
5х+9х+21=35
14х=14
х=1