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: Suppose -4*y + 19 - 3 = 0. Suppose 16 = -0*b + y*b. Calculate the lowest common multiple of b and 10.

A: 20
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Q: Evaluate (-7)/6 + 2 + 9/(-27).

A: 1/2
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Q: Calculate (144/108)/((-20)/6).

A:
-2/5
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