anonymous
  • anonymous
The sum of three numbers is . The second number is times the third. The third number is less than the first . What are the numbers?
Algebra
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SOLVED
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chestercat
  • chestercat
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chihiroasleaf
  • chihiroasleaf
I think your question is not complete.. :)
anonymous
  • anonymous
oops! sorry haha here The sum of three numbers is 96 . The second number is3 times the third. The third number is 6 less than the first . What are the numbers?
chihiroasleaf
  • chihiroasleaf
let the three numbers are x,y,z from the first sentence, "The sum of three numbers is 96" how do you say this in x,y,z ?

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anonymous
  • anonymous
not sure i understand what you mean by how we say this in x,y,z
chihiroasleaf
  • chihiroasleaf
let's say that the three numbers are x,y, and z. the first sentence say that "The sum of three numbers is 96" , we can write the sentence as "x+y+z = 96" it's what I mean.. :) do you understand now?
anonymous
  • anonymous
oh ok yesss sorry haha so x,y, and z would be 32 bcause 96/3 =32
chihiroasleaf
  • chihiroasleaf
wait..., we have no information that x, y, and z are equals... from the second sentence, we have " The second number is3 times the third" if y is the second number, and z is the third number, how do you write this in math? (in y and z)
anonymous
  • anonymous
3z=y ?
chihiroasleaf
  • chihiroasleaf
correct... :) now, from the third sentence, we have " The third number is 6 less than the first " let, x be the first number and z be the third number, how do you write it in term of x and z?
anonymous
  • anonymous
x-6=z
chihiroasleaf
  • chihiroasleaf
okay.., x - 6 = z, so x = z + 6, do you get it so far?
chihiroasleaf
  • chihiroasleaf
now, we have three equations x+y+z = 96 3z = y x = z + 6 now, substitute (change) the value of x and y in the first equation with the second and third equation, what do you get?
anonymous
  • anonymous
yes =) however i feel like that was the easy part.. and the hard part is coming =o

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