Chapter 1 - Introduction to Algebraic Expressions - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 59: 124

$-\dfrac{1}{2}$

Work Step by Step

Using the $LCD= 10$, the given expression, $\dfrac{3}{-10}+\dfrac{-1}{5}$, simplifies to \begin{array}{l}\require{cancel} \dfrac{-1(3)+2(-1)}{10} \\\\= \dfrac{-3-2}{10} \\\\= \dfrac{-5}{10} \\\\= \dfrac{-1}{2} \\\\= -\dfrac{1}{2} .\end{array}

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