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).

Let y be (1 - -1)/(-1) + -25. What is the common denominator of 117/10 and (y/(-30))/((-9)/(-111))?
10

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?
6

Let f(g) = -g**3 + g**2. Let j be f(-1). Let b be (6 - (j - 2)) + -1. Let t be (-6)/(-10) - (-648)/45. Solve 2*k = 5*k - t, 3*l = -b*k + 19 for l.

-2