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).

[Q]: 329/(-210) - 75/(-45)
[A]: 1/10


[Q]: How many decades are there in nine tenths of a century?
[A]: 9


[Q]: Let l = -51266552/1957 + 52393/2. Let q = -726381539861/5753580 + 30929299/245. Let k = l - q. What is the common denominator of k and -43/8?
[A]:
24