x-3y=5 y+3x=-5 to osobno 5=3x-y 5x-2y=7

x-3y=5 |-3 y+3x=-5 -3x + 9y = -15 3x + y = -5 10y = -20||10 y = -2 -2 + 3x = -5 3x = -5 + 2 3x = 3||3 x = 1 3x-y = 5 |-2 5x-2y=7 -6x +2y = -10 5x - 2y = 7 - x = 3 x = -3 -9 - y = 5 y = -14

1. y=6 x=-1 2.y=4 x=3