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: What is (-1 - 0) + -5 + -6 + 8?
Example Output: -4

Example Input: What is prob of picking 3 o and 1 p when four letters picked without replacement from pooooopppppoo?
Example Output: 42/143

Example Input: Let j(d) = d**3 - 14*d**2 + 15*d - 21. Let k be j(13). Solve k = -4*s - 11 for s.
Example Output:
-4