5922
a. 63
1 and 7.
3 & 7.
1, 3, 7, 9, 21, 63
63
The highest number that both 63 and 14 go into is infinity. They go into infinity an infinite number of times (as does every other number). I'm not sure if you have asked the right question, but if you have then the answer is infinity. If, however, you meant, "what is the highest common factor of both 63 & 14?", then the answer is 7. 63 = 9 * 7 and 14 = 2 * 7.
5/7 + 7/9 = 45/63 + 49/63 = 94/63 or 1 31/63
The number 63 can be evenly divided by 1, 3, 7, 9, 21, and 63.
63
prime factorizing, 63 = 3*3*7 and 28 = 2*2*7, so the answer is 7.
Any multiple of 63.
1 and 7 go into 63 and 77. Incidentally, the word is goes, not gose!