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math

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Please show me how to solve:

Sharon has some one-dollar bills and some five-dollar 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.

  • math -

    ONE*1+FIVE*5=30

    where ONE is the number of ones, and FIVE is the number of fives.

    ONE+FIVE=14
    Five=14-ONE

    ONE*1+(14-ONE)5=30
    ONE+70-5*ONE=30
    -4ONE=-40
    ONE=8 bills, then FIVE =6

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