Answer:
15
Step-by-step explanation:
38=10+13+c
c=38-10-13=15
Hope this helps!
At first glance the answer seems like 3
u should draw it out
-1 1, -2 2, 3 -3. Is this what you wanted? If no tell me in comments and maybe a can help fix.
20 and 22
You would create an equation that would simulate this situation and solve for x to find the first even integer. Then add 2 to x to find the second even integer.