Answer :

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1/4, 2/5

For (4, 5) the least common multiple (LCM) is  20.

Therefore, the least common denominator (LCD) is  20.

Rewriting as equivalent fractions with the LCD:
5/20, 8/20

The LCD(Lowest Common Denominator) for 2/5 and 1/4 is; 20.

LCD is an acronym that means Lowest common denominator.

To get LCD, what we do is to multiply both denominators and then divide the product by their greatest divisor.

The product of the denominators is; 5 * 4 = 20

The greatest divisor of 5 and 4 without remainder is 1.

Thus;

LCD = 20/1

LCD = 20

In conclusion, the LCD for 2/5 and 1/4 is 20.

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