13•x-9•x-16=27-7

To solve the equation \( 13x - 9x - 16 = 27 - 7 \), follow these steps:

1. Simplify both sides of the equation:

   • Left side: \( 13x - 9x - 16 = (13 - 9)x - 16 = 4x - 16 \)
   • Right side: \( 27 - 7 = 20 \)

   Now you have: \[ 4x - 16 = 20 \]

2. Add 16 to both sides to isolate the term with \( x \):

   \[ 4x - 16 + 16 = 20 + 16 \] \[ 4x = 36 \]

3. Divide both sides by 4 to solve for \( x \):

   \[ x = \frac{36}{4} = 9 \]

Thus, the solution is: \[ x = 9 \]