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]: Solve 3*q - 9 = -3*s + 5*s, -q + 3 = -3*s for q.
[A]: 3


[Q]: Evaluate -35 + 38 - (3 - (2 + -3)).
[A]: -1


[Q]: Let r = 4 - 8. Let f be (-2 - 1 - r)/1. Solve 0 = -u + 1 + f for u.
[A]:
2