Tìm x , biết: |x - 3| + |3x + 4| - |2x + 1| = 0

King Math

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Tìm x , biết: |x - 3| + |3x + 4| - |2x + 1| = 0

Tìm x , biết: |x - 3| + |3x + 4| - |2x + 1| = 0
 
Tìm x , biết: |x - 3| + |3x + 4| - |2x + 1| = 0
I will guess that you are supposed to "solve for x".

You have three absolute-value expressions within the left-hand side of this equation. Each one splits the number line into an interval. Find the various intervals, and then check the equation on each interval. (For further information, including worked examples, try here.)

If you get stuck, please reply showing your thoughts and efforts so far. Thank you! ;)
 
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