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17-08-2017
English

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Solve the Absolute Value Equation

7| -7x - 3 | = 21

Please show how to do the problem.

Respuesta :

17-08-2017

Start by dividing by 7. (You want to isolate the absolute value)
Now it's |-7x-3| = 3
Now we have 2 possibilities:
-7x-3 = 3
or
-7x-3 = -3
evaluate, and you have 2 possibilities: x = 0, or x = -6/7

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