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

Question

Luke Brewer

22 July, 17:27

+5

Answers (1)

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Sergio · Answer 1

In step one, you are supposed to add 25 to both sides, because if you just subtract, it would be - 5x-50=53

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