# 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 Step 3: negative five times x over negative five = fifty-three over negative five Step 4: x = negative fifty-three over five

(2) Answers

She subtracted 25 two times

The error is in step 1. Instead of subtracting 25 you should add 25 to each side. x = -20.6

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