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).

Calculate -0.4 - 4148.
-4148.4

Let g = -89 - -94. Solve 2*i + 1 = -g for i.
-3

Suppose -2*y - 131 = -7*y - 3*n, 2*y - 2*n = 46. Suppose -5*k - 2*a = 3, 7*k - 2*k - 5*a - y = 0. Solve -3*g + 2*z = -2, -4*g = -z + k - 2 for g.

0