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

User Alex Collette
by
5.5k points

1 Answer

4 votes

Answer:

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

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).

User Andre Bossard
by
6.0k points
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