Answers

2014-01-08T19:27:37+08:00
The ans will be 2

2=2*1
4=2*2

bring down the two common factors which is the least among the other factors then that will be your LCD.    
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2014-01-09T22:49:55+08:00
First find the factors of 2 and 4

2= 2 x 1
4= 2 x 2
and among those factors find out which one is the greatest
and we see that it is 2
so that greatest common factor is 2 ^^
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