1. 8x=40+4-15y+10 12x+4-15y+10=0 Bardzo prosze o pomoc 2. 5x+y=-3 x+2y=3

8x=40+4-15y+10 12x+4-15y+10=0 8x+15y=54 12x-15y=-14 ----------------- 20x=40 x=2     8*2+15y=54 15y=54-16 15y=38 y=38/15   x=2 y=38/15             5x+y=-3/*(-2) x+2y=3     -10x-2y=6 x+2y=3 ----------------- -9x=9 x=-1   -1+2y=3 2y=4 y=2     x=-1 y=2