sNiTcHoOf sNiTcHoOf

14-07-2022
Mathematics

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Solve the system of equations using elimination: -x-2y=19 and -x-y=12.

Respuesta :

wafflefly21 wafflefly21

14-07-2022

Answer:

[tex]\begin{cases}x=-5\\y=-7\end[/tex]

Step-by-step explanation:

[tex]\begin{cases}-x-2y=19\left(1)\right\\-x-y=12\left(2)\right\end[/tex]

(2)-(1)

[tex]y=-7[/tex]

Sub into (2)

[tex]-x+7=12\\x=-5[/tex]

Solutions:

[tex]\begin{cases}x=-5\\y=-7\end[/tex]

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