SOLUTION: Explain why 3x-y is the same as -y+3x

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Question 1127662: Explain why 3x-y is the same as -y+3x
Answer by math_helper(2461) About Me  (Show Source):
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The commutative property of addition states that a+b = b+a (i.e. you can move things around without changing the sum).
3x - y = 3x + (-y) = (-y) + 3x = -y + 3x