|3x-4|=|x+2|
=> 3x-4=x+2 hoặc 3x-4=-x-2
+) 3x-4=x+2
=> 3x-x=2+4
=> 2x=6
=> x=3
+) 3x-4=-x-2
=> 3x+x=-2+4
=>4x=2
=> x=2/4 (loại)
Vậy x=3.
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