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 Input:
Suppose -c + 4*v + 2 = -24, -4*c - 3*v + 9 = 0. Solve 2*b - c = -b for b.

Ex Output:
2


Ex Input:
Solve 0 = 4*b + b + 15 for b.

Ex Output:
-3


Ex Input:
Suppose 5*g = 85 - 0. Suppose -4*d - 4*m + m + 27 = 0, 2*d + 5*m - 3 = 0. What is the remainder when g is divided by d?

Ex Output:

8