TASK DEFINITION: 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).
PROBLEM: Three letters picked without replacement from {s: 5, f: 4, l: 1}. What is prob of picking 2 f and 1 l?

SOLUTION: 1/20

PROBLEM: Solve 0 = -p + 1, -38 + 15 = 5*h + 2*p for h.

SOLUTION: -5

PROBLEM: Solve -8*y = -7*y + 5*y for y.

SOLUTION:
0