Answer
$(y-1)(x+7)$
Work Step by Step
Using factoring by grouping, the given expression, $
xy-x+7y-7
,$ is equivalent to
\begin{array}{l}\require{cancel}
(xy-x)+(7y-7)
\\\\=
x(y-1)+7(y-1)
\\\\=
(y-1)(x+7)
.\end{array}
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.