SOLUTION: Solve the system in three variables: y=3-x 2x+2y=6

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Question 913680: Solve the system in three variables: y=3-x
2x+2y=6
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You only show 2 variables.
Is there another equation or are there only 2 variables?