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2x+6y =19 |.1| 2x+6y =19
----------------- -
-18x =-33
x = 1,83
2x+6y=19
2.1,83+y = 19
3.66 +y = 19
y = 19-3,66
y = 5,19
2x-3y=2 x 1.83 - 3 x 5,19
=3,66 - 15,57
= -11,91