They are: 3 and 7
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Prime numbers are integers. 21/49 is equivalent to 3/7
The ratio equivalent to 49 can be expressed as 49:1. This means that for every 49 parts of one quantity, there is 1 part of another quantity. Other equivalent ratios include 98:2 or 245:5, as long as both parts of the ratio are multiplied by the same non-zero number.
The divisors of 147 are 1, 3, 7, 21, 49, and 147.These do: 1, 3, 7, 21, 49, 147.
3:7; you just divide each number by 7.
The number 7. 7 goes into 21 3 times; 7 goes into 49 7 times.