Answers

2015-07-29T11:25:40+08:00
12x is the LCD.
4x = 4 times x
3   = 3

4 times 3 times x = 12x

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2015-07-29T18:05:02+08:00
The LCD of 4x and 3 is
4x        3
8          6
12        9
           12      
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