Sue took her collection of nickels and dimes to deposit in the bank. She has five fewer nickels than dimes. Her total deposit was $54.05. How many dimes did she deposit?
there are 309 dimes... think of it like this 5(d + 7) + 10d = 4670 5d + 35 + 10d = 4670 15d + 35 = 4670 then you take that and subtract on both sides cancelling out the 35
