Question

.A place is 18m above the sea level and another place is 13m below the sea
level. What is the difference of level between 2 places.

Answer 1

Answer:

31

Step-by-step explanation:

"A place" = +18

"another place" = -13

-13-------0--------18

So, add 13 and 18

= 31

Answer 2

Answer:

you can understand through attached pic

Step-by-step explanation:

hope it can help you