4x-6y+2=0 3x+y= x+11

4x-6y+2=0 3x+y= x+11 4x-6y=-2 2x+y=11 /*(-2) 4x-6y=-2 -4x-2y=-22 -8y=-24 y=3 x=4

{4x-6y+2=0 {3x+y= x+11 {4x - 6y = -2 {2x + y = 11 /× (-2) {4x - 6y = -2 {-4x - 2y = - 22 -8y = -24 /: (-8) y = 3 2x + y = 11 2x + 3 = 11 2x = 11 - 3 2x = 8 /: 2 x = 4 {x = 4 {y = 3 sprawdzenie na y 4x - 6y = -2 4 × 4 - 6y = -2 16 - 6y = -2 -6y = -18 y = 3