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When given an algebraic expression involving subtraction, why is it best to rewrite the expression using addition before identifying the terms

User Korona
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Usually when you do expressions involving subtraction you can do Keep, Change ,Change
That means you keep the sign of the first number and change the other two signs.
It is best you rewrite the expression to addition because a lot of people don't do well with subtracting .
User Matt Foley
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