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Mathematics
Cassidy Burch
Today, 05:15
3x - 7y = 5
9y = 5x + 5
+4
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1
)
Emilie Carson
Today, 08:13
0
Elmination method ...
multiplied top by 5 and bottom by 3
15x - 35y = 25
-15x + 27y = 15
-8y = 40
y = - 5
plug - 5 in ...
3x - 7 (-5) = 5
3x + 35 = 5
3x = - 30
x = - 10
(-10,-5)
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