Subtract polynomials: $ \, \color{blue}{ 30 } \, $ , $ \, \color{orangered}{ 20 }$.
Answer
$$ \color{blue}{30} - \color{orangered}{20} = 10 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lr} & 30 \\ \color{red}{ - } & 20 \\ \hline \end{array} $$Step 2: Change ALL the signs in the second row.
$$ \begin{array}{lr} & 30 \\ \color{red}{ - } & -20 \\ \hline \end{array} $$Step 3: Combine like terms (add each column):
$$ \begin{array}{lr} & 30 \\ \color{red}{ - } & -20 \\ \hline & 50 \end{array} $$This page was created using
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