Simplify \(1\times b\) to \(b\).
\[2a+b+2x=12a+b+722\]
Cancel \(b\) on both sides.
\[2a+2x=12a+722\]
Factor out the common term \(2\).
\[2(a+x)=12a+722\]
Divide both sides by \(2\).
\[a+x=\frac{12a+722}{2}\]
Factor out the common term \(2\).
\[a+x=\frac{2(6a+361)}{2}\]
Cancel \(2\).
\[a+x=6a+361\]
Subtract \(a\) from both sides.
\[x=6a+361-a\]
Simplify \(6a+361-a\) to \(5a+361\).
\[x=5a+361\]
x=5*a+361
