October 14, 2015

Homework Help: Math

Posted by Laurie on Saturday, April 4, 2009 at 12:50pm.

Lianne has nineteen coins worth $1.45. Some coins are dimes & the rest are nickels. How many dimes does she have.

I understand the D + N = 19 & the 10D + 5N = 145, but I don't understand how you'd subtract them from each other?

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