Add $ \, \color{blue}{ 31y-140y } \, $ and $ \, \color{orangered}{ 14y-64y }$.
Answer
$$ \left( \color{blue}{31y-140y} \right) + \left( \color{orangered}{14y-64y} \right) = -159y $$
Explanation
Step 1: First we have to write polynomials in descending order.
$$ \begin{aligned} P(x) &= -109y \\ Q(x) &= -50y \\ \end{aligned} $$Step 2: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lr} & -109y \\ \color{blue}{ + } & -50y \\ \hline \end{array} $$Step 3: Combine like terms (add each column):
$$ \begin{array}{lr} & -109y \\ \color{blue}{ + } & -50y \\ \hline & -159y \end{array} $$This page was created using
Polynomial Operations Calculator