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Alexandra [31]
3 years ago
14

What is the lcd of 1/3 and 3/7Help rn​

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0

Answer:

The least common denominator is 21.

Step-by-step explanation:

First, you must find the least common factor of the two:

3: 3, 6, 9, 12, 15, 18, <em><u>21</u></em>, 24, 27, 30

7: 7, 14, <em><u>21</u></em>, 28, 35, 42, 49, 56, 63, 70

Second, you must increase the fractions:

\frac{1}{3} × \frac{7}{7} = \frac{7}{21}           \frac{3}{7} × \frac{3}{3} = \frac{9}{21}

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