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OpenStudy (anonymous):
the difference of two numbers is 28. their sum is 72. what is the smaller number?
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OpenStudy (anonymous):
We have a system : x - y = 28 x+ y = 72 Sum them : x+x+y-y=20+72 2x = 92 x = 46 and y : 46 - y = 28 -y = 28-46
OpenStudy (anonymous):
44+28=72
OpenStudy (anonymous):
yep ! @briannamooney :please answer to my question I said in your question ;)
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