SOLUTION: The sum of two numbers is equal to twice their difference. If one number is 4 more than the other, find the numbers.
I did A=first # a=2nd #
Then A+a=2(A-a) A=2a+4
but i
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Question 183408: The sum of two numbers is equal to twice their difference. If one number is 4 more than the other, find the numbers.
I did A=first # a=2nd #
Then A+a=2(A-a) A=2a+4
but it does not come out right.
Please help.
Anne
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let x=first number, y=second number
"The sum of two numbers is equal to twice their difference" translates to Note: I'm implying that "x" is bigger than "y"
Also, " If one number is 4 more than the other" means that
Start with the first equation
Plug in
Combine like terms.
Multiply
Subtract 4 from both sides
Divide both sides by 2 to isolate y
Go back to the second equation
Plug in
Add
==================================
Answer:
So the solutions are and which means that the two numbers are 6 and 2
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