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Solve by substitution -4x+y=6 -5x-y=21

Solve by substitution -4x+y=6 -5x-y=21
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Solve by substitution
-4x+y=6
-5x-y=21

User Sean Patrick Floyd
by
8.1k points

1 Answer

2 votes

Answer:

x=-3, y=-6. (-3, -6).

Explanation:

-4x+y=6

-5x-y=21

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

-9x=27

x=27/-9

x=-3

-5(-3)-y=21

15-y=21

y=15-21

y=-6

User Ben Bauman
by
7.4k points
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