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).

Input: Consider Input: Two letters picked without replacement from emltz. What is prob of sequence el?

Output: 1/20


Input: Consider Input: Three letters picked without replacement from oxccztxcccocottcxxto. Give prob of picking 2 o and 1 t.

Output: 2/95


Input: Consider Input: Suppose 0 = 3*j + 8 - 20. Suppose 23 = j*y - 89. Solve 2*x = 4*a - y, -4*x + 5*a - a = 36 for x.


Output: -4