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Westkost [7]
3 years ago
10

Find out x and y. y = 2x。 x = 2y - 9​

Mathematics
1 answer:
Elena-2011 [213]3 years ago
5 0

Answer:

x = 3

y = 6

Step-by-step explanation:

y = 2x

x = 2y - 9

=> x = 2(2x) - 9

=> x = 4x - 9

=> 9 = 4x - x

=> 9 = 3x

=> 3x = 9

=> x = 9/3

=> x = 3

y = 2x

=> y = 2(3)

=> y = 6

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The answer of the following subtraction is 5a^{2} -2b^{2} +28ab

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