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solve using any appropriate method
10x+y=278
10y+x=107
11 years ago

Answers

Steve
I chose wolframalpha.com, which you can always use to verify your solutions.

http://www.wolframalpha.com/input/?i=solve+10x%2By%3D278%2C+10y%2Bx%3D107+
11 years ago

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