Answer:
x = 2
y = -3
Explanation:
y = -x - 1 and 5x - 2y = 16 replace y with -x-1 in the second equation
5x - 2(-x-1) = 16
5x + 2x + 2 = 16 add like terms
7x + 2 = 16 subtract 2 from both sides
7x = 14 divide both sides by 7
x = 2 now we can use this information to find y
y = -x-1 replace x with the value we found
y = -2-1
y = -3