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    to add or subtract variablesmthey must have both the?

    0  Views: 1597 Answers: 1 Posted: 8 years ago

    1 Answer

    Well, I wish you would have given an example of the problems you are studying.
    If I have variables in an equation, I can't do much with them unless they are the same; by that I mean, not much I can do with:      3A - 2B.    If there is a similarity, as in 3A - 2B + 4A, I CAN do something, like add the 3A and 4A (7A), and simplify my equation to 7A - 2B.


    Is this what you mean? 



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