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).
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Question: Suppose 2*n + 2*n = 4. Suppose -n = f - 2. What is the highest common divisor of f and 5?

Answer: 1


Question: Suppose -3*p + 5*b + 290 = 2*p, -5*b = 0. Let j = p + -6. Suppose 3*z = 3*v + 36, z = -5*v + 4 + 14. Calculate the highest common factor of z and j.

Answer: 13


Question: Let z(n) = -n + 1. Let p be z(0). Let s = p - -5. Suppose 4 = s*u - 4*u. Solve -2 = u*h + 2*a - 3*a, a + 4 = 0 for h.

Answer:
-3