Posted by Dani. on Wednesday, September 5, 2012 at 9:16pm.
What is 2/7 - 1/4 + 9/14? What is the LCD? And how did you find it?
- Algebra 1 - Ms. Sue, Wednesday, September 5, 2012 at 9:20pm
2/7 - 1/4 + 9/14
One way to find the LCD is to find the multiples of the largest denominator. It must be also divisible by the other denominators.
14, 28, 42
Ah -- 28 is also divisible by 7 and 2.
The LCD is 28.
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