(11.2-p)*4.5=31,5

To solve the equation \((11.2 - p) \cdot 4.5 = 31.5\), follow these steps:

1. Divide both sides by 4.5 to isolate the term with \(p\):

   \[ 11.2 - p = \frac{31.5}{4.5} \]

2. Calculate \(\frac{31.5}{4.5}\):

   \[ \frac{31.5}{4.5} = 7 \]

   Now the equation is:

   \[ 11.2 - p = 7 \]

3. Subtract 11.2 from both sides:

   \[ -p = 7 - 11.2 \]

   \[ -p = -4.2 \]

4. Multiply both sides by -1 to solve for \(p\):

   \[ p = 4.2 \]

So the solution is:

\[ p = 4.2 \]