instruction:
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).
question:
What is 32.79 take away 7?
answer:
25.79


question:
Solve -i + z + 1 = 0, 17 = 2*i - 7*z + 2*z for i.
answer:
-4


question:
Suppose 4*y = -20, 3*a + 2*y - 295 = 4*y. What is the tens digit of a?
answer:

9