Respuesta :
The answer is (1,11). You can solve for x first and plugged it in to find y.

Answer:
(1, 11)
Step-by-step explanation:
If you plug both of these values in for the x and y in both equations you will get a true statement.
10(1) + 3(11) = 43
10 + 33 = 43
-9(1) - (11) = -20
-9 - 11 = -20