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).

Solve 2*x - t = -10, -3*x + 5*x = 5*t - 26 for x.
-3

Calculate prob of picking 1 v and 1 w when two letters picked without replacement from twtttvtqt.
1/36

Let y be 0*((-9)/2 + 5). Solve -2*s - 4*h + 3 - 13 = y, 5*s - 2*h = 23 for s.

3