instruction:
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).
question:
What is (3/2)/((-21)/(-28) - -3)?
answer:
2/5


question:
Calculate prob of sequence ppy when three letters picked without replacement from {y: 2, p: 2}.
answer:
1/6


question:
Let r = -676 - -264991/392. Let y = r + -8719/1176. Calculate the common denominator of y and -55/16.
answer:

48