Question

помогите пожалуйста.
срочно нужно

Answer 1

х - 2у = 5

2x + 3y = -4

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x = 5+ 2y

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2* (5+2y) + 3y = -4

10 + 4y +3y = -4

7y = -4 - 10

7y = -14

y = -2

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x - 2* (-2) = 5

x + 4 = 5

x = 1