Answer:
y = -8
Step-by-step explanation:
This problem is solved using substitution. So you need to start by substituting in the -9 for the 'x' in the main equation. This will give you something that looks like this:
[tex]7(-9)-10y=17[/tex]
Now just solve!
[tex]7(-9)-10y=17\\\\-63-10y=17\\\\-10y=80\\\\y=-8[/tex]
Hope this helps :)
