SOLUTION: IF x+y=4 y=x-8, what is the value of x?

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Question 449983: IF x+y=4 y=x-8, what is the value of x?
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
To find the value of x, substitute in the first equation y=x-8, and solve for x:
x%2Bx-8=4+>2x=12=>x=6.