Erica solved the equation -5x - 25 = 78; her work is shown below. Identify the error and where it was made. -5x - 25 = 78
Step 1: -5x - 25 - 25 = 78 - 25
Step 2: -5x = 53
5x 53
Step 3:
--5
-5
Step 4: x =
53
5
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.
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