 <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). <yor> 17m - n = p Fi n kún ìhà méjèèjì: 17m = n + p Fi m sí ìhà méjèèjì: 18m = n + p + m Ní báyìí, pín àwọn ìhà méjèèjì sí 3 6m = (n + p + m)/3 = apapọ n, p, àti m Nítorí náà, ìdáhùn náà ni (C). 