Question

Solve for x: 5x + 2 = 4x − 9.

Answer 1

This is algebra. Always remember you can move values. Like so.

\[A=B\]
\[A-B=B-B\]

is what your're doing when you move a value in algebra.

Lets apply this to your Question.
\[5x+2=4x-9\]
\[5x+2-4x=4x-9-4x\]
\[5x+2-4x-2=4x-9-4x-2\]

Work that equation.

Answer 2

thx