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).

Suppose -106 = -2*u + s, u - 40 = -5*s + 13. Calculate the remainder when u is divided by 14.
11

Solve 4*f + 4*z = 0, 0 = -28*f + 29*f - 2*z + 15 for f.
-5

Let u = -968/171 + -1/171. What is the common denominator of u and -32/39?

39