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: 329/(-210) - 75/(-45)
Example Output: 1/10

Example Input: Evaluate (4/(-18))/((-15)/135).
Example Output: 2

Example Input: Let w = 31 + -21. Let j = w - 0. What is the lowest common multiple of 7 and j?
Example Output:
70