If you mean 6/8 then it is 3/4 as a reduced fraction or 0.75 as a decimal
68 = 68/1
If you mean 68 then it is 68/1 but if you mean 6/8 then it is 3/4
68 is an integer, not a fraction and there is no sensible way to express it as a fraction. And since it is not a fraction, it cannot be simplified.
68 into fraction = 68/1
68/72 = 17/18
It is 68/85. This fraction further reduces to 4/5
68% = 17/25
68/1
Well the two equivalent fraction for twelve and twenty fourths is 6 and 18 eighths and 42 and 68 fourths.
68% = 68/100 = 17/25
68% = 68/100 or 17/25
68 is an integer and so there is not really a sensible way of writing it as a fraction or mixed number.