The question is somewhat confusing but assuming you mean where the submarine is after moving up 7 meters then down 38 meters the submarine would now be located 56 meters below sea level
1) 1 + 1 = 2
2) 1 - 1 = 0
3) 1 * 1 = 1
4) 1 / 1 = 1
Hope this helps!
Answer:x=20
Im pretty sure thats the answer
Pythagoras & his colleagues
