SOLUTION: -3-{x-3x-y}-y

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Question 200991: -3-{x-3x-y}-y
Answer by RAY100(1637) About Me  (Show Source):
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-3-{ x-3x-y} -y
.
-3 -1{x-3x-y} -y
.
distribute (-1)
.
-3 -x +3x +y -y
.
-3 +2x
.
2x-3
.