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Talja [164]
3 years ago
9

I need help on 7, 9, and 12

Mathematics
1 answer:
OlgaM077 [116]3 years ago
7 0

7) x=10, y= -10
9) has no solution
12) x= -3 y= 1

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Answer:

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Step-by-step explanation:

7x + 2y = 7

-14x + 2y = -11

1) 7x + 2y = 7

2y = 7 - 7x

2) -14x + 2y = -11

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