Answers

2015-12-24T15:03:25+08:00
To find the average of numbers, we simply add them then divide the number (quantity) of the numbers. Based on this thing, we will do this:

83 × 3 = 249
86 × 6 = 516
516 - 249 = 89

Therefore, the answer to your question is 89.

Check:
83 + 89 = 172
172 ÷ 2 = 86
0
sorry if  I can't clearly explain it but, I hope it helped. ☺
Joecel, why you don't use algebraic expressions? Parang Guess and Check na ewan na parang di mo lang nilagay algebraic equation mo tas ginawa mo yung mga MPE na kung anu-anong properties... o.O