Answer:
[tex]p=-2[/tex]Explanation:
Here, we want to get the value of p
We start off by opening up the bracket, collecting like terms.
All these are what we will do to make sure the unknown term 'p' in this case is isolated on one side of the equality sign
We proceed with this as follows:
[tex]\begin{gathered} (-3\times7p)\text{ + (-3}\times5)\text{ = 27} \\ -21p-15=27 \\ -21p\text{ = 27 + 15} \\ -21p\text{ = 42} \\ p\text{ = -}\frac{42}{21} \\ p\text{ = -2} \end{gathered}[/tex]