SOLUTION: When using the number line to solve an equation is there rule for, "left to right" or right to left?

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Question 703728: When using the number line to solve an equation is there rule for, "left to right" or right to left?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
Zero is in the middle, then everything to the left is negative and everything to the right is positive.