The printed representation of a ratio is a pair of integers separated by a slash (/). A ratio can also be written as a proper fraction by following an integer part with + or - (matching the sign of the integer) and a ratio. No intermediate whitespace is permitted within a ratio literal. Here are some examples:

More information on ratios can be found in Rational numbers.

75/33
1/10
-5/-6
1+1/3
-10-1/7

More information on ratios can be found in Rational numbers.