Advanced MathEasy–MediumNegative solution of an absolute-value equation
Advanced Math practice question
If |x − 4| = 6 and x < 0, what is the value of x?
Answer: -2
x − 4 = 6 or x − 4 = −6, so x = 10 or x = −2. The negative solution is −2.
Common wrong answers
- If you answered 2
- 2 has the sign wrong.
- If you answered 10
- 10 is the positive solution.
- If you answered -10
- −10 uses x + 4 = −6.
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