SOLUTION: what is r+2s-(-3r)-s

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Question 244796: what is r+2s-(-3r)-s
Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
r+2s-(-3r)-s
remember minus a minus is a plus
r+2s+3r-s
arrange like variables
r+3r+2s-1s
4r+s
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