 
 <translate> 17m - n = p
Add n to both sides:
17m = n + p
Add m to both sides:
18m = n + p + m
Now, divide both sides by 3
6m = (n + p + m)/3 = the average of n, p, and m
So, the answer is (C). <hau> 17m - n = p Ƙara n zuwa bangarorin biyu: 17m = n + p Ƙara m zuwa bangarorin biyu: 18m = n + p + m Yanzu, raba bangarorin biyu da 3. 6m = (n + p + m) / 3 = matsakaicin n, p, da m Amsar ita ce (C). 