Answer: r = 5(13-12p)
Step-by-step explanation:
To factor, take out the GCF (the largest number that can be taken out of the equation to leave all numbers as whole numbers). In this case, the largest number that can be taken out of the equation is 5.
Take 5 out from the equation and put it outside of the parenthesis (a factor). Divide 65 and -60p by 5 to find the value of the numbers within the parenthesis.
After doing so, you will have your equation factored.