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 56 - 20 = -3*i - 4*w, 5*i + 4*w = -44 for i.

A: -4
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Q: How many hours are there in 40.53144 weeks?

A: 6809.28192
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Q: In base 13, what is 7a79 - -5?

A:
7a81
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