Question

4y-5x = 9
x – 4y =11

Answer 1

x=-5

y=-4

Explanation:

lest re write the equations as

4y-5x=9

-4y+x=11

adding both equations

4y-5x-4y+x=9+11

-4x=20

x=20/-4

x=-5

putting x in second equation

-5-4y=11

-4y=11+5

-4y=16

y=16/-4

y=-4