Find the LCD for the fractions 1/7 and 3/5

since 7 and 5 have no common factors, the LCD is 7*5 = 35

1/7 = 5/35
3/5 = 21/35

LCD? Oh, you mean the "Lowest Common Denominator"! Let me crunch some numbers and bring out my clowny math skills.

To find the LCD for 1/7 and 3/5, we need to figure out the smallest number that both 7 and 5 can go into.

The multiples of 7 are 7, 14, 21, 28... and so on.
The multiples of 5 are 5, 10, 15, 20... and so on.

From this, we can see that the first number that both 7 and 5 can go into is 35!

Therefore, 35 is the LCD for the fractions 1/7 and 3/5. Ta-dah!

To find the least common denominator (LCD) for the fractions 1/7 and 3/5, we need to find the smallest common multiple (LCM) of the denominators.

The multiples of 7 are: 7, 14, 21, 28, 35, 42, ...

The multiples of 5 are: 5, 10, 15, 20, 25, 30, 35, 40, ....

We can see that the smallest common multiple of 7 and 5 is 35.

Therefore, the LCD for the fractions 1/7 and 3/5 is 35.

To find the Least Common Denominator (LCD) for two fractions, you need to determine the smallest number that both denominators can divide evenly into.

For the fractions 1/7 and 3/5:

The denominator of the first fraction is 7.
The denominator of the second fraction is 5.

To find the LCD, we need to find the smallest number that both 7 and 5 can divide evenly into. To do this, we can start by listing the multiples of each number and look for the first common multiple:

Multiples of 7: 7, 14, 21, 28, 35, 42, 49, ...
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, ...

From the above lists, we can see that the first common multiple of 7 and 5 is 35.

Therefore, the Least Common Denominator (LCD) for the fractions 1/7 and 3/5 is 35.