Answer:
[tex]\displaystyle [-7, -7][/tex]
Step-by-step explanation:
{2x - 6y = 28
{−x - y = 14
−⅙[2x - 6y = 28]
{−⅓x + y = −4⅔
{−x - y = 14
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[tex]\displaystyle \frac{-1\frac{1}{3}x}{-1\frac{1}{3}} = \frac{9\frac{1}{3}}{-1\frac{1}{3}} \\ \\[/tex]
[tex]x = -7[/tex][Plug this back into both equations above to get the y-coordinate of −7]; [tex]\displaystyle -7 = y[/tex]
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