9514 1404 393
Answer:
a = -19
Step-by-step explanation:
In the first set of equations, subtract 4 times the second equation from the first.
(x -8y) -4(5x -2y) = (-3) -4(4)
-19x = -19 . . . . simplify
Comparing this to the equation ...
ax = -19
we see that they will have the same solution when a = -19.