Question

12+5x=2x-9

Answer 1

\(\Large\color{red}{ \bf 12+5x=2x-9 }\)
\(\Large\color{red}{ \bf 12+5x-2x=2x-9-2x }\)
\(\Large\color{red}{ \bf 12+3x=-9 }\)
\(\Large\color{red}{ \bf 12+3x-12=-9-12 }\)
\(\Large\color{red}{ \bf 3x=-21 }\)
\(\Large\color{red}{ \bf x=-7 }\)