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Find the solution of this system of equations. Separate the x- and y- values with a comma.
X= -8+y
-11x+9y=4


Sagot :

Lilith
[tex]\begin{cases}x= -8+y \\ -11x+9y=4 \end{cases}\\ \\\begin{cases}x= -8+y \\ -11 \cdot (-8+y)+9y=4 \end{cases}\\ \\\begin{cases}x= -8+y \\ 88-11y+9y =4 \end{cases}\\ \\\begin{cases}x= -8+y \\ -2y=4 -88\end{cases}\\ \\[/tex]

[tex]\begin{cases}x= -8+y \\ -2y=-84 \ \ / :(-2)\end{cases}\\ \\\begin{cases}x= -8+y \\ y=\frac{-84}{-2} \end{cases}\\ \\\begin{cases}x= -8+42 \\ y=42 \end{cases}\\ \\\begin{cases}x= 34 \\ y=42 \end{cases}\\ \\[/tex]