anonymous
  • anonymous
The sum of two numbers is 72, and twice their difference is 24. What is the smaller of the two numbers?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
suppose the two numbers are x and y. what can you tell about x and y from the description?
anonymous
  • anonymous
x + y= 72
anonymous
  • anonymous
okay and?

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anonymous
  • anonymous
2(x-y)=24
anonymous
  • anonymous
This is where I get stuck
anonymous
  • anonymous
okay good. so x+y = 72 and 2(x-y)=24 or x-y = 12 so you have x+y = 72 x-y =12 solve for x and y
anonymous
  • anonymous
I'm not sure where to go from there. Do I combine the two equations?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
well lets see, what could we get for x, that will make 72 if we add y? Plug n chug works, lets try 40 for X.
anonymous
  • anonymous
What can we add to 40 to make 72? 32.
anonymous
  • anonymous
42+30=72
anonymous
  • anonymous
42-30=12, 12x2=24
anonymous
  • anonymous
made a mistake, i took 40 instead of 40, but if we were to pick 40, we would still see that it wont meet the requirements, so that is wrong anyway.
anonymous
  • anonymous
blah, instead of 42**
anonymous
  • anonymous
ok. I understand it a little bit more
anonymous
  • anonymous
brittany, you had x+y = 72 x - y = 12 add the two equations 2x = 84. so x = 42. if x = 42, then 42+y = 72. so y = 30. so your answer is 30
anonymous
  • anonymous
I concur.
anonymous
  • anonymous
Alright, thanks guys
anonymous
  • anonymous
:)

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