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3 years ago

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

Mathematics

2 answers:

liberstina [14]3 years ago

8 0

She should have added 25 instead of subtracted 25...step 1 error

NemiM [27]3 years ago

7 0

If you would like to solve the equation -5x - 25 = 78, you should do this using the following steps:

-5x - 25 = 78
-5x - 25 + 25 = 78 + 25
-5x + 0 = 103
-5x = 103 /(-5)
x = 103 / (-5)
x = - 103/5 = - 20.6

The error was already made at step 1.

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