Posted by Kanya on Thursday, March 31, 2011 at 7:51pm.
Lisa has 5 more green marbles than blue marbles. She has a total of 40 green and blue marbles. Which system of equations represents this situation if x is the number of green marbles and y is the number of blue marbles?

Math  PsyDAG, Friday, April 1, 2011 at 2:21pm
y = x + 5
x + y = 40
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