Brooke solved the equation below:
6r = 72
6r − 6 = 72 − 6
r = 66
is brooke’s solution correct? if the solution is incorrect, explain why it is incorrect and show the correct steps to solve the equation.

Brooke's solution is incorrect because he subtract 6 instead of dividing it.

The solution of the equation is r=12

Step-by-step explanation:

Given : Brooke solved the equation below:  

6r = 72  

6r − 6 = 72 − 6  

r = 66

To find : Is Brooke’s solution correct? If the solution is incorrect, explain why it is incorrect and show the correct steps to solve the equation.

Solution : No, Brooke's solution is not correct because 6r-6 is not r and Brooke subtract 6 both side instead of dividing it.

Therefore, The correct solution steps are:

Step 1- Write the equation

Step 2- Divide both side by 6

Step 3 - Solve the equation

So, the solution of the equation is r=12

c(x)= 6x + 3

step-by-step explanation:

$25 becasue a 10 increase would make it from 80 to 50