Final answer:
To solve the system of equations using substitution method, substitute the given value of y into the second equation and solve for x.
Step-by-step explanation:
To solve the system of equations using substitution method, we substitute the given value of y into the second equation:
8x + 5(-5) = -17
Simplifying, we get:
8x - 25 = -17
Adding 25 to both sides gives:
8x = 8
Dividing by 8, we find:
x = 1
Therefore, the solution to the system of equations is x = 1 and y = -5.