posted by kerry .
use substitution to solve the linear system
Solve for y in one formula, and then substitute that value for y in the other formula to solve for x. Once you find x, substitute that value into either formula to get the value for y.
-3y = 16 - 4x
y = (16 - 4x)/-3 = (4/3)x - 16/3
I'll let you do the rest.
I hope this helps. Thanks for asking.