Answer:
F is -5, 4
G is 0, 1
H is 0, 4
I hope this is right and if it is not then I'm sorry.
12/30=2/5
16/40=2/5
The ratio is the same because they both simplify to 2/5
The answer for your problem.
6x=y−6
No problem!! venir en France, nous avons baguettes