Solve the system of equations by either the addition method or the subtitution method. Express numbers as integers or decimals.  -0.1x+0.1y=0.2  0.1x+0.1y=0.1   The solution set is( , )

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Solve the system of equations by either the addition method or the subtitution method. Express numbers as integers or decimals. 

-0.1x+0.1y=0.2 

0.1x+0.1y=0.1

 

The solution set is( , )

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