Question

$$5x-7=x+9$$

Answer

x=4

Solution


Add \(7\) to both sides.
\[5x=x+9+7\]
Simplify  \(x+9+7\)  to  \(x+16\).
\[5x=x+16\]
Subtract \(x\) from both sides.
\[5x-x=16\]
Simplify  \(5x-x\)  to  \(4x\).
\[4x=16\]
Divide both sides by \(4\).
\[x=\frac{16}{4}\]
Simplify  \(\frac{16}{4}\)  to  \(4\).
\[x=4\]