rozwiaz uklad rownan 12,50x=y-100 16x=y+12

12,50x=y-100 16x=y+12 12,50x=y-100 -16x=-y-12 -3,5x=-112 x=32 16x=y+12 y=500 x=32 y=500

12,50x=y-100 |*(-1) 16x=y+12 -12,5x=-y+100 |+ 16x=y+12 |+ 3,5x=112 |:3,5 x=32 16*32=y+12 512=y+12 -y=-500 |:(-1) y=500 x=32 y=500