world problems involving systems of equations with three variables
so I got this problem for school and I'm working on it but I think I set it up wrong..
In Super Bowl I, on January 15, 1967, the Green Bay Packers defeated the Kansas City Chiefs by a score of 35 to 10. The total points scored came from 13 different scoring plays, which were a combination of touchdowns, extra-point kicks, and field goals, worth 6, 1, and 3 points respectively. The same number of touchdowns and extra point kicks were scored. How many touchdowns, extra-point kicks, and field goals were scored during the game?
that is the problem and this is what I did so far...
45= 6a+3b+c
because 45 is the total amount of points scored between the teams, 6 is the amount awarded for a touchdown, 3 is the amount awarded for a field goal and 1 is the amount awarded for a field goal.
the second equation was 2=a+b+c. I got that because there are two teams total and they are both contributing an unknown amount of each one.
and the third equation is a=b because the amounts have to be even...
am I on the right track here.. I'm kind of confused :-(