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).

[EX Q]: Let u(w) be the first derivative of -w**2/2 + 9*w - 1. What is the lowest common multiple of u(8) and 6?
[EX A]: 6

[EX Q]: Suppose 5 = -3*r - 4. Let b(f) = 3*f**2 + 2*f - 3. Let c be b(r). Calculate the highest common divisor of c and 6.
[EX A]: 6

[EX Q]: Let r = 88 + -84. Suppose 5*y + 12 = h, 0*y + h - 10 = 4*y. Let o be y/4 - 44/(-8). Solve -n + 5*k - o = -0*k, 0 = -r*n - 2*k + 2 for n.
[EX A]:
0