Answer:
Thus, the solution is (13, 9).
Explanation:
Because both equations have already been solved for x, we equate the two equations to eliminate x and make it easily possible to solve for y:
x = 4 + y = x= -5 + 2y
Cancelling out the x, we get:
4 + y = -5 + 2y
We need to solve this for y. To do this, subtract y from both sides. The result will be:
4 = -5 + 2y - y, or 4 = -5 + y. Then y = 9.
Substituting 9 for y in x = 4 + y, we find that x = 4 + 9, or x = 13.
Thus, the solution is (13, 9).
Check: Does (13, 9) satisfy x = -5 + 2y?
Is 13 = -5 + 18 true? YES