anonymous
  • anonymous
the sum of two numbers is 63 and the difference is 9 what are the numbers
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@Hero @perl can one of you help me please I am so confused with this problem
Hero
  • Hero
x + y = 63 x - y = 9
Hero
  • Hero
Solve the system

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More answers

anonymous
  • anonymous
how?
anonymous
  • anonymous
i need the larger number and the smaller number
anonymous
  • anonymous
@Hero
Hero
  • Hero
Start by adding the equations together.
anonymous
  • anonymous
how do i add them together?
Hero
  • Hero
By doing this: (x + x) + (y - y) = 63 + 9
anonymous
  • anonymous
oh ok so what is the next step?
Hero
  • Hero
Combine like terms.
anonymous
  • anonymous
x^2 +y^2 = 72?
Hero
  • Hero
x + x = 2x y - y = 0
Hero
  • Hero
@RaeBeach9296 are you still here?
anonymous
  • anonymous
yes
anonymous
  • anonymous
so what about the 72?
Hero
  • Hero
You added that correctly.
Hero
  • Hero
So what equation are we left with?
anonymous
  • anonymous
x+x=2x y+y=0?
Hero
  • Hero
Let's do this a different way: |dw:1433367314785:dw|
anonymous
  • anonymous
ok i understand that whats next?
Hero
  • Hero
Solve 2x = 72 for x
anonymous
  • anonymous
so divide both sides by 2?
Hero
  • Hero
Correct.
anonymous
  • anonymous
36?
Hero
  • Hero
Yes. What do you think is the value of y?
anonymous
  • anonymous
0?
Hero
  • Hero
If x - y = 9 and x = 36, then how might we find the value of y?
anonymous
  • anonymous
add y to both sides?
Hero
  • Hero
Show me the steps you would do to find y.
anonymous
  • anonymous
x-y=9 +y +y
anonymous
  • anonymous
x=9+y?
anonymous
  • anonymous
@Hero are you there?
Hero
  • Hero
What comes to your mind when you see x = 36?
anonymous
  • anonymous
x=36y?
Hero
  • Hero
This is your second time introducing multiplication to a problem that only involves addition and subtraction.

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