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).

Example Input: Solve 0 = 4*b + b + 15 for b.
Example Output: -3

Example Input: Solve 3*z + 6 = -5*o, 8 = 8*z - 12*z for o.
Example Output: 0

Example Input: Suppose 4*g - 9 - 7 = 0. Suppose 0 = -4*y + g*u + 144, 2*u = 3*y - 0*y - 111. Calculate the remainder when y is divided by 396/39 + 2/(-13).
Example Output:
9