3 years ago

|3x|=9 what's the answer and the breakdown of this problem?

Mathematics

2 answers:

Nina [5.8K]3 years ago

8 0

|3x|=9 means that 3x=-9 or 3x=9 so x=3 and x=-3

andreev551 [17]3 years ago

4 0

$|3x|=9\iff3x=9\ \vee\ 3x=-9\qquad\text{divide both sides by 3}\\\\x=3\ \vee\ x=-3$

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