Problem

$8\right)$ $-7x-2y=-13$
$x-2y=11$

10th-13th grade

Algebra

Solution

Qanda teacher - amrit69

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b. $ \begin{cases} -4x+y=6 \\ -5x-y=21 \end{cases} $
$-13$
$C$ $ \begin{cases} -7x-2y=- \\ x-2y=11 \end{cases} $

10th-13th grade

Algebra