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24-03-2017
Mathematics

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X+y=1
x+3y=9

Solve plzzzzzzzzzzzzzzzzzzzz

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Аноним Аноним

02-04-2020

Answer:

x = - 3

y = 4

Step-by-step explanation:

x + y = 1 | (-3)

x + 3y = 9

- 3x - 3y = - 3

x + 3y = 9

_____________

- 3x + x = 9 - 3

- 2x = 6

2x = - 6

x = - 3

- 3 + y = 1

y = 1 + 3

y = 4

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