We define the multiples of 21/1 as the product of any integer multiplied by 21/1. Therefore, to create a list of multiples of 21/1 we start by multiplying 21/1 by one, then we multiply 21/1 by two, then we multiply 21/1 by three, and so on.
To multiply a fraction by an integer, we leave the denominator alone and multiply the numerator by the integer. It is impossible to give you a list of all multiples of 21/1 because the list goes on forever. However, here is the math to calculate the beginning list of multiples of 21/1.
21/1 × 1 = 21/1
21/1 × 2 = 42/1
21/1 × 4 = 63/1
21/1 × 4 = 84/1
21/1 × 5 = 105/1
21/1 × 6 = 126/1
21/1 × 7 = 147/1
21/1 × 8 = 168/1
21/1 × 9 = 189/1
21/1 × 10 = 210/1
21/1 × 11 = 231/1
21/1 × 12 = 252/1
We have simplified the fractions above for you. Below are the multiples of 21/1 in their lowest possible terms:21/1 = 21
42/1 = 42
63/1 = 63
84/1 = 84
105/1 = 105
126/1 = 126
147/1 = 147
168/1 = 168
189/1 = 189
210/1 = 210
231/1 = 231
252/1 = 252
As we stated above, the list of multiples of 21/1 goes on forever because the product of 21/1 multiplied by any whole number (integer) is a multiple of 21/1.
You can also create a list of multiples of 21/1 if you keep adding 21/1 like this:21/1
21/1 + 21/1 = 42/1
21/1 + 21/1 + 21/1 = 63/1
21/1 + 21/1 + 21/1 + 21/1 = 84/1
∞
Again, the list can go on forever, because you can continue adding 21/1 to the list. Therefore, the list of multiples of 21/1 is ∞ (infinite).
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Multiples of 21/2
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