Seudónimo Seudónimo
  • 17-10-2021
  • Mathematics
contestada

[tex]\begin{bmatrix}x+2y=2x-5\\ x-y=3\end{bmatrix}[/tex]



Show your work, please!

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bedanktdoei
bedanktdoei bedanktdoei
  • 19-10-2021

Answer:

(x , y) = (1 , -2)

Step-by-step explanation:

[tex] \binom{x \: + \: 2y \: = \: 2x \: - \: 5}{x \: - \: y \: = \: 3} [/tex]

[tex]3 \: + \: y \: + \: 2y \: = \: 2(3 \: + \: y) \: - \: 5[/tex]

[tex]y \: = \: - 2[/tex]

Substitute the given value of y into "x + 3 + y".

[tex]x \: = \: 3 \: + \: ( - 2)[/tex]

[tex]x \: = \: 1[/tex]

(x , y) = (1 , -2)

:DDD

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