Chapter 1 - Introduction to Algebraic Expressions - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 58: 114

$-3$

The given expression, $ \left( \dfrac{12}{-5} \right) + \left( -\dfrac{3}{5} \right) $, simplifies to \begin{array}{l}\require{cancel} -\dfrac{12}{5}-\dfrac{3}{5} \\\\= \dfrac{-12-3}{5} \\\\= \dfrac{-15}{5} \\\\= -3 .\end{array}