i need help like now

Question

the average of your 3 quiz grades is 17 points . 2 of your quiz grades are 14 and 19 points . write and solve and equation to find the score of your third quiz

Answer 1

17 = (14 + 19 + T)/3

the average score is the sum of all scores divided by the number of scoes

33 + T = 3(17) = 51

T = 51-33 = 18 = the third score

14 is 3 less than the average 17

19 is 2 more than the average

18 is 1 more than the average

3 below and 1+2=3 above

the points below average = the points above average