SOLUTION: I am trying to understand how to solve this equation y1=21-x y2=6x

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Question 1040084: I am trying to understand how to solve this equation
y1=21-x
y2=6x
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.
1. It is a statement, not a question.

2. How to read y1, y2? What they are?