Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3: 20

$-34$

Work Step by Step

Since the signs are the same, add the numbers and copy their common sign. Hence, the expression, $-15+(-19) ,$ simplifies to \begin{array}{l}\require{cancel} -34 .\end{array}

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