August 2018 2 14 Report
Rozwiąż układy równań.

a)
7x-11y=22
2x+3y=18

b)
2x+3y=4
5x+6y=7

c)
3x+y=-1
-3y-5y=-7

d)
2002x+2004y=2006
2008y+2010y=2012

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