# Chapter 6 - Rational Expressions and Equations - 6.3 Addition, Subtraction, and Least Common Denominators - 6.3 Exercise Set - Page 393: 6

$\dfrac{10}{y^2}$

#### Work Step by Step

Adding the numerators and copying the denominator, the given expression, $\dfrac{8}{y^2}+\dfrac{2}{y^2} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{8+2}{y^2} \\\\= \dfrac{10}{y^2} .\end{array}

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