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Mathematics 13 Online
OpenStudy (anonymous):

Solve each absolute value equation or inequality and choose the correct answer from the choices provided. |x| + 5 = 18

OpenStudy (anonymous):

how can you keep x on one side?

OpenStudy (anonymous):

Um I don't know.

OpenStudy (anonymous):

think do you add something or subtract

OpenStudy (anonymous):

I really don't know

OpenStudy (anonymous):

|x| + 5 = 18 -5 -5 what do you get?

OpenStudy (anonymous):

13

OpenStudy (anonymous):

write the whole thing

OpenStudy (anonymous):

Is -13 the answer ?

OpenStudy (anonymous):

not yet write the whole thing

OpenStudy (anonymous):

I don't get it

OpenStudy (anonymous):

|x| + 5 = 18 now write the new one after subtracting the 5

OpenStudy (anonymous):

|x| + 0=-13

OpenStudy (anonymous):

where did the -13 come from

OpenStudy (anonymous):

18-5

OpenStudy (anonymous):

18-5=?

OpenStudy (anonymous):

13

OpenStudy (anonymous):

ok |x| =13

OpenStudy (anonymous):

now can x be positive or negative

OpenStudy (anonymous):

So it's positive ?

OpenStudy (anonymous):

you have abs value

OpenStudy (anonymous):

so it's neither

OpenStudy (anonymous):

|x|=|-x| is that true

OpenStudy (anonymous):

No

OpenStudy (anonymous):

why

OpenStudy (anonymous):

because one is negative and the other positive

OpenStudy (anonymous):

fact about absolute values |x|=|-x|=x

OpenStudy (anonymous):

So no matter it will always be the same ?

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