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OpenStudy (anonymous):
x=number of nickels y=number of dimes x+y=14 .5x+.10y=$1.00 how many nickels and dimes are there
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OpenStudy (lucaz):
multiply the 2nd equation by -2 and subtract it from the 1st equation
OpenStudy (lucaz):
sorry, add it to the 1st equation, not subtract
OpenStudy (lucaz):
|dw:1392653178180:dw|
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