Yes. Both numbers have the common factor 3, so for a start, you can divide both by that factor. There may be additional common factors.
sqrt(1083) = sqrt(3*361) = sqrt(3)*sqrt(361) = sqrt(3)*19
1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581
399/100= 3.99
Yes. Because both 300 and 399 are multiples of 3, the fraction 300/399 can be reduced to 100/133. To quickly check for divisibility by 3, simply add up the digits of the number. If the result is divisible by 3, so is the original number. For example, 399 is divisible by 3 because 3 + 9 + 9 = 21 which is divisible by 3.
399
399/1000 is already in its simplest form
0.0905
Factors of 722: 1, 2, 19, 38, 361, 722.Factors of 1083: 1, 3, 19, 57, 361, 1083.GCF (722, 1083) = 361.
15 over 19
It is simplified as 1 over 2.
23 over 100 is not simplified
1 over 12 is simplified