Answer
[tex]10y+14=2y-18[/tex]Explanation
The distributive property tells us that:
[tex]a(x+y)=ax+ay[/tex]Thus, we can apply this property to our given equation in the right side:
[tex]10y+14=2(y-9)[/tex][tex]10y+14=(2\cdot y-2\cdot9)[/tex][tex]10y+14=2y-18[/tex]