Question

The difference between a number and four is multiplied by negative five. The result is twenty. What is the number?

Write an equation that can be used to find the number, n.

Solve the equation you wrote in part A to find the value of the number. Include all of your work in your answer.

Answer 1

(n-4)*-5=20           Answer is  n= 8

Answer 2

-5(n - 4) = 20

Distribute the -5 through the parenthesis
-5n + 20 = 20

subtract 20 from both sides
-5n = 0

Divide both sides by -5
n = 0

CHECK
-5( 0 - 4) =
-5(-4) = 20