20/210 is one possible answer.
2/21 is in its simplest form.
The only common factor of 13 and 42 is 1, since 13 is prime and 42 is not a multiple of 13.
13 + 42 = 55
-29
-55
42
13 is a prime number which does not divide evenly into 42 so the GCF is 1
13/42 is in its simplest form.
13/42 = 0.3095238 recurring (that is, 0.3095238095238...)
It's the sum of 42 and 13 which is 55.
Yes. 7/21 = (1x7)/(3x7) = 1/3