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 -x + 10 = 4*x. Suppose 0 = -2*h + 7 + 13. Calculate the least common multiple of x/10 - 413/(-35) and h.

Answer: 60


Question: Calculate prob of picking 1 v and 1 w when two letters picked without replacement from twtttvtqt.

Answer: 1/36


Question: Let u(v) = -v + 5. Let t be u(2). Solve t*x + 21 = 3*r, -4*x + r = -0*r + 22 for x.

Answer:
-5