What are the common multiples of 80 and 69?

Common multiples of 80 and 69 are numbers that both 80 and 69 can be divided into evenly with no remainder.

To find the common multiples of 80 and 69, we compare the list of multiples of 80 with the list of multiples of 69 to see what they have in common.

To create a list of multiples of 80, we multiply 80 by 1, 80 by 2, and so on like this:

80 x 1 = 80
80 x 2 = 160
80 x 3 = 240
80 x 4 = 320
...

Similarly, to create a list of multiples of 69, we multiply 69 by 1, 69 by 2, and so on like this:

69 x 1 = 69
69 x 2 = 138
69 x 3 = 207
69 x 4 = 276
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 80 and 69?"

5520, 11040, 16560, 22080, etc.

Since 5520 is the first number they have in common, 5520 is the least common multiple of 80 and 69.

Note: Our lists are shortened because they go on forever, but can you see the pattern when you look at the answer in green above? The common multiples are in intervals of 5520 (the least common multiple), so you can continue the green list above with more common multiples of 80 and 69 by simply adding 5520 to the last number on the list.

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What are the common multiples of 80 and 70?
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