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Q: What is the LCd of these fractions 1 divided by 2 plus 2 divided by 3 plus 3 divided by x?

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6x

LCD = LCD(a, 2b, 3c) = 6abc

If that's 1/8, 2/9, 1/4, the LCD is 72

56

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6abc

6x

LCD = LCD(a, 2b, 3c) = 6abc

The LCD for working with those fractions is 8 (or 1/8)

1/3 and 1/4

If that's 1/8, 2/9, 1/4, the LCD is 72

(1) find the LCD. (2) find the factor that each original denominator needs to be multiplied by to get the LCD. (3) multiply both the numerator and the denominator by that factor.

56

Find lcd for both fractions = 300, so (4/300) / (75/300), divide numerators = 4/75

Find the LCD, in this case 4 and then add the fractions, so the problem can now be written as:2/4 + 1/4 = 3/4

1/4 + 1/5 = 9/20 Answer: To add fractions with different denominators, get the Least Common Denominator (LCD) of the addends first, then add the numerators of the fractions. In 1/4 + 1/5, the LCD is 20. 1/4 = 5/20 1/5 = 4/20 .......===== ....... 9/20

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