SOLUTION: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.

SOLUTION: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.

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Question 339888: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
You don't know without knowing the values of a and b.

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