A student believes that subtractionproblems can be solved by highlighting thedistance between two numbers, as...
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Algebra
A student believes that subtractionproblems can be solved by highlighting thedistance between two numbers, as shownbelow: Why will this method not alwayswork?Problem: Evaluate 3 - -4.There are 7 units, so 3 - -4 = 7.
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