Answer:
x = 1
y = 7
Step-by-step explanation:
Two equations, two unknowns. We know that y = 7x so we can substitute that into the first equation to get:
[tex]-5+2\left(7x\right)=9[/tex]
[tex]-5+14x=9[/tex]
[tex]14x=14[/tex]
This gives us x = 1.
Now plug this bag into either equation to find y, I will use the second since it's easier:
y = 7(1) = 7