We define the multiples of 21/5 as the product of any integer multiplied by 21/5. Therefore, to create a list of multiples of 21/5 we start by multiplying 21/5 by one, then we multiply 21/5 by two, then we multiply 21/5 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 21/5 because the list goes on forever. However, here is the math to calculate the beginning list of multiples of 21/5.
21/5 × 1 = 21/5
21/5 × 2 = 42/5
21/5 × 4 = 63/5
21/5 × 4 = 84/5
21/5 × 5 = 105/5
21/5 × 6 = 126/5
21/5 × 7 = 147/5
21/5 × 8 = 168/5
21/5 × 9 = 189/5
21/5 × 10 = 210/5
21/5 × 11 = 231/5
21/5 × 12 = 252/5
We have simplified the fractions above for you. Below are the multiples of 21/5 in their lowest possible terms:21/5 = 4 1/5
42/5 = 8 2/5
63/5 = 12 3/5
84/5 = 16 4/5
105/5 = 21
126/5 = 25 1/5
147/5 = 29 2/5
168/5 = 33 3/5
189/5 = 37 4/5
210/5 = 42
231/5 = 46 1/5
252/5 = 50 2/5
As we stated above, the list of multiples of 21/5 goes on forever because the product of 21/5 multiplied by any whole number (integer) is a multiple of 21/5.
You can also create a list of multiples of 21/5 if you keep adding 21/5 like this:21/5
21/5 + 21/5 = 42/5
21/5 + 21/5 + 21/5 = 63/5
21/5 + 21/5 + 21/5 + 21/5 = 84/5
∞
Again, the list can go on forever, because you can continue adding 21/5 to the list. Therefore, the list of multiples of 21/5 is ∞ (infinite).
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