OpenStax, Elementary Algebra 2e §1.9 Properties of Real Numbers · Try It 2 · Algebra · Expressions

Properties of Real Numbers · Try It 2

Simplify: $37 m + 21 n + 4 m - 15 n .$

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OpenStax, Elementary Algebra 2e · §1.9 Properties of Real Numbers · Try It 2

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Checked against the answer in OpenStax, Elementary Algebra 2e.