80x-540=180

To solve the equation \( 80x - 540 = 180 \), follow these steps:

1. Add 540 to both sides to isolate the term with \( x \):

   \[ 80x - 540 + 540 = 180 + 540 \]

   This simplifies to:

   \[ 80x = 720 \]

2. Divide both sides by 80 to solve for \( x \):

   \[ x = \frac{720}{80} \]

   This simplifies to:

   \[ x = 9 \]

So, the solution is \( x = 9 \).