What are the common multiples of 85 and 89?

Common multiples of 85 and 89 are numbers that both 85 and 89 can be divided into evenly with no remainder.

To find the common multiples of 85 and 89, we compare the list of multiples of 85 with the list of multiples of 89 to see what they have in common.

To create a list of multiples of 85, we multiply 85 by 1, 85 by 2, and so on like this:

85 x 1 = 85
85 x 2 = 170
85 x 3 = 255
85 x 4 = 340
...

Similarly, to create a list of multiples of 89, we multiply 89 by 1, 89 by 2, and so on like this:

89 x 1 = 89
89 x 2 = 178
89 x 3 = 267
89 x 4 = 356
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 85 and 89?"

7565, 15130, 22695, 30260, etc.

Since 7565 is the first number they have in common, 7565 is the least common multiple of 85 and 89.

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 7565 (the least common multiple), so you can continue the green list above with more common multiples of 85 and 89 by simply adding 7565 to the last number on the list.

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What are the common multiples of 85 and 90?
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