math
posted by Jane .
Please show me how to solve:
Sharon has some onedollar bills and some fivedollar bills. She has 14 bills. The value of the bills is $30. Solve a system of equations using elimination to find how many of each kind of bill she has.

ONE*1+FIVE*5=30
where ONE is the number of ones, and FIVE is the number of fives.
ONE+FIVE=14
Five=14ONE
ONE*1+(14ONE)5=30
ONE+705*ONE=30
4ONE=40
ONE=8 bills, then FIVE =6