So, we start off with this:
\(-3 = 7(y- \frac{9}{7} )\)
First, use the distributive property on the right side of the equation:
\(7(y - \frac{9}{7} ) = 7y - \frac{63}{7}\)
We can then simplify \(\frac{63}{7}\) to just 9. Now, our equation is:
\(-3 = 7y - 9\)
Add 9 to both sides:
\(6 = 7y\)
And finally, divide both sides by 7:
\(\frac{6}{7} = y\)
And there you have it! Hope I helped, let me know if you have any questions :)