SOLUTION: Solve each system 5r+s+t=-19 -5r-6s+2t=-9 5s+5t=-20

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Question 259788: Solve each system
5r+s+t=-19
-5r-6s+2t=-9
5s+5t=-20
Answer by ashtontr(4) About Me  (Show Source):
You can put this solution on YOUR website!
this is my equation, but i wasnt signed in to get it