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OpenStudy (anonymous):
A person opens his wallet and finds that all the bills are $1 bills, $5 bills, or $10 bills. There are 43 bills in this person's wallet. There are 8 more $5 bills than $1 bills. If the total amount of bills is $278, How many $10 bills does this person have? (establish a system of three equations)
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OpenStudy (mertsj):
x=ones y=fives z=tens x+y+z=43 y=x+8 x+5y+10z=278
OpenStudy (mertsj):
Solve the system
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