December 2018 1 12 Report
Rozwiąż metodą podstawiania. (Chociaż część przykładów) [kl 2 gim]

1)

 \left \{ {{x+y=5} \atop {2x-y=1}} \right.

2)

 \left \{ {{5x+y= -3} \atop {x+2y=3}} \right.

3)

 \left \{ {{2x+y=2} \atop {3x-2y=12}} \right.

4)

 \left \{ {{x+2y=1} \atop {3x-y=10}} \right.

5)

 \left \{ {{2x+y=2} \atop {4x+y= -4}} \right.

6)

 \left \{ {{25m+2m=40} \atop {2m+n=1}} \right.
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