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Algebra 13 Online
OpenStudy (anonymous):

Solve: 7|x| = 42

sam (.sam.):

Isolate |x| first

hartnn (hartnn):

first try to isolate |x| by dividing both sides by 7 what u get ?

OpenStudy (anonymous):

6?

OpenStudy (anonymous):

thank you! :)

hartnn (hartnn):

wait!

hartnn (hartnn):

thats |x| = 6 when |a| = b a=b or a=-b

hartnn (hartnn):

so what about |x| = 6 ?

OpenStudy (anonymous):

that was it !

hartnn (hartnn):

i mean as it was |x| = 6 then x=6 , -6

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