Find the solution to the system 9x-4y=-13 and 9x-2y=-20

x = - 3, y = - 3.5. As an ordered pair it is (-3, - 3.5).

Step-by-step explanation:

9x - 4y = - 13

9x - 2y = - 20

Subtract:-

-2y = 7

y = - 3.5.

Substitute for y in the first equation:

9x - 4 (-3.5) = - 13

9x = - 27

x = - 3.