Answer:
x = -1, y = -1
( -1 , -1 )
Explanation:
plug in -9y - 10 for x
5 ( -9y - 10) + 6y = -11
-45y - 50 + 6y = -11
-39y - 50 = -11
-39y = 39
y = -1
then plug in
-9(-1) - 10 = x
9 - 10 = x
x = -1
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