Solve the system of equations. Then classify the system.

7x-7y= -42
-7y-7x=42
What is the solution of the system?
Is the system inconsistent or consistent?
Is the equations dependent or independent?

1 answer

add the equations:
7x-7y-7y-7x=-42-42
-14y=-84
solve for y. then put that into either equation, solve for x.

the equations are independent, and consistent. You need to review those definitions.