Please do all of the attachments, quick. It is due please First one with the right answer gets brainlest, and I will give extra points please.

Integers consists of zero (0), the positive natural numbers (1, 2, 3, ...), also called whole numbers or counting numbers, and their additive inverses (the negative integers, i.e., −1, −2, −3, ...).
So they are just asking for what positive or negative numbers make the equations true.
So remember how positive and a negative numbers relate and you will be fine.

B. x-(+7)=x+(-7)
C. X-(-25)=x+25
A. X-(-3)=x+3

Where is it shown below?

I'm not sure but i think it's 1670km/h