Error Analysis The solution shown for the equation is

incorrect. What is the correct solution? What is the error?

- 5 (3-r) = 30

- 15 - 5r = 30

- 5r = 45

r = - 9

The solution is

(Type the value of r.)

-5 (3-r) = 30

Distribute the - 5

-5*3 + - 5*-r = 30

-15+5r=30

Add 15 to both sides

5r=45

Divide both sides by 5

r=9

The mistake was made while distributing. The error was - 5*-r should be 5r, not - 5r.

they did not distribute correctly, it should be plus 5r not - 5r

r = 9

Step-by-step explanation:

- 5 (3-r) = 30

Distribute

-15 + 5r = 30

The error is here

they did not distribute correctly, it should be plus 5r not - 5r

Add 15 to each side

-15+15 + 5r = 30+15

5r = 45

Divide each side by 5

5r/5 = 45/5

r = 9