We have the following equation.
[tex]-7(y-1)[/tex]To multiply we operate each term of the parenthesis by the -7, in addition, we also operate the signs.
[tex]\begin{gathered} -7(y-1)=-7y+7 \\ \end{gathered}[/tex]If you are looking to solve for "y" what we need to do is clear it.
[tex]\begin{gathered} -7y+7=0 \\ 7y=7 \\ y=\frac{7}{7} \\ y=1 \end{gathered}[/tex]In conclusion, the multiplication is:
[tex]-7y+7[/tex]The value to "y" is
[tex]y=1[/tex]