After paying mom, you find that you have 13 bills. The number of ten dollar bills you have is twice the number of five dollar bills. The number of one dollar bills is two less than six times as many ten dollar bills. Find the number of each bill that you have. Write an equation to solve it.

Answer 1

t + f + o = 13
t = 2 f
o + 2 = 6 t
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2 f + f + (6t-2) = 13
3 f + (12f-2) = 13
15 f = 15 remarkable, whole number :)
t = 2 f
o = 6t-f