Answer:
[tex]-14x-9y=6[/tex]
Step-by-step explanation:
We are given with two equations
first equation is [tex]-7x-y=0[/tex]
second equation is
[tex]7x+8y=-6[/tex]
we find the result of subtracting two equation
subtract the second equation from the first, so
first equation - second equation, multiply second equation by -1 and then add it with first equation
[tex]-7x-y=0[/tex]
[tex]-7x-8y=+6[/tex]
Now add both equations, we get
[tex]-14x-9y=6[/tex]