Subtract polynomials: $ \, \color{blue}{ x } \, $ , $ \, \color{orangered}{ 7x }$.
Answer
$$ \color{blue}{x} - \color{orangered}{7x} = -6x $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lr} & x \\ \color{red}{ - } & 7x \\ \hline \end{array} $$Step 2: Change ALL the signs in the second row.
$$ \begin{array}{lr} & x \\ \color{red}{ - } & -7x \\ \hline \end{array} $$Step 3: Combine like terms (add each column):
$$ \begin{array}{lr} & x \\ \color{red}{ - } & -7x \\ \hline & 8x \end{array} $$This page was created using
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