Given a simple high-school level math question, you are required to solve it and provide the final answer. The final answer is always a single number. These questions can range from a variety of topics like simple arithmetic, solving equations, converting a quantity from one unit to another, finding remainders/GCD/LCM, finding probabilities etc. Each question has only one correct answer. This answer can be a positive or negative integer, a fraction or a decimal number. If the answer is a negative number use the hyphen (e.g. -42) symbol for the minus sign. For decimal numbers, do not add extra zeros after the decimal point. For fractional numbers, separate the numerator and denominator using a forward slash (e.g. 3/25).

Example Input: Two letters picked without replacement from {u: 1, q: 2, x: 1, s: 2, k: 2, m: 4}. Give prob of picking 1 s and 1 m.
Example Output: 4/33

Example Input: What is prob of picking 3 t and 1 b when four letters picked without replacement from {t: 5, b: 3}?
Example Output: 3/7

Example Input: Let t be (-12)/54 + 536/(-18). Let c be 4/t - (-274)/30. Solve 3*h + 6 = -c for h.
Example Output:
-5