Here we are given this linear equation with one variable y.
Now we have -7 in multiplication with y on the left side.
We perform opposite operation of multiplication to solve this equation.
so opposite operation of multiplication is division.
Dividing both sides by -7 we have
[tex] \frac{-7y}{-7} =\frac{-91}{-7} [/tex]
so we have y=13
