As a farmer, one of your responsibilities is to plow the field to prepare it for planting. On day 1, you plowed field. On day 2, you plowed of the field.
of the
How much more of the field did you plow on day 1 than on day 2?

The second statement is incorrect. the third statement is also incorrect, there is no such thing as a negative zero. the last statement is also incorrect because what your saying is that negative 49 is the opposite of negative 49 which is false because the opposite of negative 49 is positive 49.