alleryTo undo a subtraction from a variable, you use the property of equality that is:
AAddition
BAdhesion
CAdoption
DAdjustment
Answer & Solution
Correct answer: A. Addition
1. Subtraction is undone by its opposite.
2. Again both sides receive the same treatment.
3. That is the Addition Property of Equality.
_Source: OpenStax Elementary Algebra 2e, Chapter 2, Solving Linear Equations and Inequalities._
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