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).

[Q]: Let c be (5 + -4)/((-1)/3). What is the tens digit of c - (-6)/3 - -13?
[A]: 1


[Q]: ((-510)/72)/(-17)*22/11
[A]: 5/6


[Q]: Let s(j) = j**2 - j - 3. Let y(r) = 4*r - 8. Let n(v) = -3*v + 9. Let g(x) = 5*n(x) + 4*y(x). What is the lowest common multiple of g(-6) and s(4)?
[A]:
63