The answers are -18, 2, and 10.
The answers are 4, -7, and 12.
The answer is 14, 20, -5, 2.
The answer is 4/5, -3/10, 1/20.
The answer is -1/7, 3/14.
The answers are -7, 5, 10, 30, -11, -18.
The answers are x + 3y and 2x + 13y.
The answer is -12/7.
The answer is 1/4.
The answer is 2.
The answer is 145.
