Answer:
[tex]\displaystyle (3, 6)[/tex]
Step-by-step explanation:
{x -4y = −21
{8y - x = 45
_________
[tex]\displaystyle \frac{4y}{4} = \frac{24}{4} \\ \\ [/tex]
[tex]\displaystyle y = 6[/tex][Plug this back into both equations above to get the x-coordinate of 3]; [tex]\displaystyle 3 = x[/tex]
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