cierrakwoods1
cierrakwoods1
18-04-2019
Mathematics
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crystal4571
crystal4571
18-04-2019
-2y + 2
Explanation
We have (x - y + 1) - (x + y - 1)
Let’s expand the Parentheses
= x - y + 1 - x - y + 1
Then let’s group the like terms
= (x - x) + (- y - y) + (1 + 1)
= 0 - 2y + 2
= 2y + 2
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