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Algebra 13 Online
OpenStudy (anonymous):

Solve for x: |x| -8 = -5 A. x: -13 and x: -3 B. x: 3 and x: -3 C. x: 3 and x: 13 D. No solution.

OpenStudy (anonymous):

How do you isolate the variable?

OpenStudy (anonymous):

Adding 8? @mthompson440

OpenStudy (anonymous):

yes, so what is the new equation?

OpenStudy (anonymous):

X: 3 ? @mthompson440

OpenStudy (anonymous):

it should read the absolute value of = 3 So, what does the absolute value mean?

OpenStudy (anonymous):

I'm not really sure. @mthompson440

OpenStudy (anonymous):

Think of it like this . . . On a number line -3 -2 -1 0 1 2 3 the absolute value of three is three in both directions. So + or -

OpenStudy (anonymous):

So it's +3? @mthompson440

OpenStudy (anonymous):

an example of the absolute value of "a" is "a" in both directions +a and -a

OpenStudy (anonymous):

Oh okkk. @mthompson440

OpenStudy (anonymous):

the absolute value of -a is still a because it is "a" places away from the zero

OpenStudy (anonymous):

Oh ok. So the answer is x: 3 and x:-3?

OpenStudy (anonymous):

@mthompson440

OpenStudy (anonymous):

so in this case the absolute value of -3 is still 3. Yes, 3 and -3

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