OpenStax, Elementary Algebra 2e §1.6 Add and Subtract Fractions · Exercise 105 · Arithmetic · Fractions
Add and Subtract Fractions · Exercise 105
Why do you need a common denominator to add or subtract fractions? Explain.
This is an open-ended exercise: its source gives no single answer.
OpenStax, Elementary Algebra 2e · §1.6 Add and Subtract Fractions · Exercise 105
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