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Viefleur [7K]
3 years ago
5

12. x + y = 4

Mathematics
1 answer:
34kurt3 years ago
3 0

Answer:

x =  -  \frac{2}{3}  \:  \:  \: y =  \frac{14}{3}

Step-by-step explanation:

Since we know -7x=y we use the substitution method and plug it in the top equation.

x + - 7x = 4

- 6x = 4

x =  -  \frac{4}{6}

or x=-2/3

Then plug it back in the the bottom equation

- 7( \frac { - 2}{3} ) = y

y=14/3

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