Question

Erica solved the equation -5x - 25 = 78; her work is shown below. Identify the error and where it was made. 5

points)
-5x - 25 = 78
Step 1: -5x - 25 - 25 = 78
25
Step 2: -5x = 53
-5X
53
Step 3: -5 = -5
Step 4: x =
53
• Step 1: She should have added 25 to each side.
Step 1: She should have divided both sides by -5.
Step 3: She should have divided both sides by -5.
Step 3: She should have multiplied both sides by -5.

Answer 1

• -103/5

Explanation:

-5x-25=78

-5x-25+25=78+25

-5x=103

divide both sides by -5

-5x/-5 = 103/-5

x=-103/5