Question

2x-y=23 & x-9=-1 by substitution

Answer 1

Answer:

x=8, y=-7. (8, -7).

Step-by-step explanation:

2x-y=23

x-9=-1

-----------------

x=-1+9=8

x=8

-------------

2(8)-y=23

16-y=23

y=16-23=-7

x=8, y=-7. (8, -7).