1.Rozwiąż układy rownań metodą podsumowania.
a) b) c) d)
{2x-2y=7 {0,4x+0,3y=1,4 {2x+3y+14 {1/2x-2y=8
{4x+3y=21 {0,1x+3y=2,3 {3x-2y=8 {2x+5y=6
Proszeee!!!!
c) 2x+3y=14 /*(-3)
3x-2y=8 /*2
-6x-9y=-42
6x-4y=16
-13y=-26
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