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1 vote
-5x - 6y = -1
-9x + 7y = 16

1 Answer

4 votes

Answer:

x=-1, y=1. (-1, 1).

Explanation:

-5x-6y=-1

-9x+7y=16

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

9(-5x-6y)=9(-1)

-5(-9x+7y)=-5(16)

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-45x-54y=-9

45x-35y=-80

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

-89y=-89

89y=89

y=89/89

y=1

-5x-6(1)=-1

-5x-6=-1

-5x=-1+6

-5x=5

x=5/-5

x=-1

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