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Within the order of operations, how are addition and subtraction handled when both appear in the same expression?
AAddition is always performed before subtraction
BSubtraction is always performed before addition
CThey are performed in whichever order gives a positive result
DPerformed together, in order from left to right
Answer & Solution
Correct answer: D. Performed together, in order from left to right
1. Addition and subtraction are treated as having equal priority, just like multiplication and division.
2. Neither operation automatically comes before the other because of that equal priority.
3. The tie is broken by working through the expression from left to right.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.2 Use the Language of Algebra_
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