Odpowiedź :
1/3x - 1/2y = 2
1/4x + 1/3y = 1/12
-1/2y = 2- 1/3x
1/4x + 1/3y= 1/12
1/2y = -2 + 1/3x /:1/2
1/4x + 1/3y= 1/12
y= -4 + 2/3x
1/4x + 1/3(-4 + 2/3x) = 1/12
y= -4 + 2/3x
1/4x - 4/3 + 2/9x = 1/12
y= -4 + 2/3x
17/36x = 1/12 + 4/3
y= -4 + 2/3x
17/36x = 17/12 /:17/36
y= -4 + 2/3x
x =3
y= -4 + 2/3 *3
x =3
y= -2
x =3
1/4x + 1/3y = 1/12
-1/2y = 2- 1/3x
1/4x + 1/3y= 1/12
1/2y = -2 + 1/3x /:1/2
1/4x + 1/3y= 1/12
y= -4 + 2/3x
1/4x + 1/3(-4 + 2/3x) = 1/12
y= -4 + 2/3x
1/4x - 4/3 + 2/9x = 1/12
y= -4 + 2/3x
17/36x = 1/12 + 4/3
y= -4 + 2/3x
17/36x = 17/12 /:17/36
y= -4 + 2/3x
x =3
y= -4 + 2/3 *3
x =3
y= -2
x =3
1/3x - 1/2y = 2 /*6
1/4x + 1/3y = 1/12 /* (-12)
2x - 3y = 12 /*3
-3x - 4y = -1 /*2
6x - 9y = 36
-6x - 8y = -2
-17y = 34 / /(-17)
y=-2
2x - 3y = 12
2x - 3 * (-2) = 12
2x + 6 = 12
2x = 12 -6
2x = 6
x = 3
y = -2
1/4x + 1/3y = 1/12 /* (-12)
2x - 3y = 12 /*3
-3x - 4y = -1 /*2
6x - 9y = 36
-6x - 8y = -2
-17y = 34 / /(-17)
y=-2
2x - 3y = 12
2x - 3 * (-2) = 12
2x + 6 = 12
2x = 12 -6
2x = 6
x = 3
y = -2
1/3x - 1/2y = 2 /*6
1/4x + 1/3y = 1/12 /*12
2x-3y=12
3x+4y=1
2x=12+3y /:2
3x+4y=1
x=6+3/2y
3*(6+3/2y)+4y=1
18+9/2y+4y=1
x=6+3/2y
x=6+3/2y
9/2y+4y=-17 /*2
x=6+3/2y
9y+8y=-34
17y=-34 /:17
x=6+3/2y
y=-2
x=6-3
x=3
y=-2
1/4x + 1/3y = 1/12 /*12
2x-3y=12
3x+4y=1
2x=12+3y /:2
3x+4y=1
x=6+3/2y
3*(6+3/2y)+4y=1
18+9/2y+4y=1
x=6+3/2y
x=6+3/2y
9/2y+4y=-17 /*2
x=6+3/2y
9y+8y=-34
17y=-34 /:17
x=6+3/2y
y=-2
x=6-3
x=3
y=-2