Jawab: 1
Penjelasan dengan langkah-langkah:
3x+4y+2z=3 pers 1
2x+3y+6z=11 pers 2
-2x+5y+z= -5 pers 3
pers 1 &2
3x+4y+2z=3 x 3 9x+12y+6z=9
2x+3y+6z=11 x 1 2x+3y+6z=11 -
-----------------------------
7x+9y= -2 pers 4
pers 2&3
2x+3y+6z=11 x1 2x+3y+6z=11
-2x+5y+z= -5 x6 -12x+30y+6z= -30 -
-----------------------------------
14x -27y = 41 pers 5
pers 4& 5
7x+9y= -2 x2 14x+18y= -4
14x -27y = 41 x1 14x -27y = 41 -
-------------------------------
45y= -45
y= -1
masukkan y= -1 ke pers 1
3x+4y+2z=3
3x+4(-1)+2z =3
3x-4+2z=3
3x+2z=3+4
3x+2z=7 pers 6
masukkan y= -1 ke pers 2
2x+3y+6z=11
2x+3(-1)+6z=11
2x-3 + 6z = 11
2x+6z=11+3
2x+6z=14 pers 7
pers 6 dan pers 7
3x+2z=7 x 3 9x+6z=21
2x+6z=14 x 1 2x+6z=14 -
--------------------
7x =7
x=1
masukkan x=1,y= -1 ke pers 1
3(1)+4(-1)+2z=3
3-4+2z =3
2z=3-3+4
2z=4
z=2
sehingga x+2y+z = 1+2(-1)+2 = 1-2+2 = 1
[tex]x + 2y + z \\ 1 + 2( - 1) + 2 \\ 1 - 2 + 2 \\ 1[/tex]
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Jawab: 1
Penjelasan dengan langkah-langkah:
3x+4y+2z=3 pers 1
2x+3y+6z=11 pers 2
-2x+5y+z= -5 pers 3
pers 1 &2
3x+4y+2z=3 x 3 9x+12y+6z=9
2x+3y+6z=11 x 1 2x+3y+6z=11 -
-----------------------------
7x+9y= -2 pers 4
pers 2&3
2x+3y+6z=11 x1 2x+3y+6z=11
-2x+5y+z= -5 x6 -12x+30y+6z= -30 -
-----------------------------------
14x -27y = 41 pers 5
pers 4& 5
7x+9y= -2 x2 14x+18y= -4
14x -27y = 41 x1 14x -27y = 41 -
-------------------------------
45y= -45
y= -1
masukkan y= -1 ke pers 1
3x+4y+2z=3
3x+4(-1)+2z =3
3x-4+2z=3
3x+2z=3+4
3x+2z=7 pers 6
masukkan y= -1 ke pers 2
2x+3y+6z=11
2x+3(-1)+6z=11
2x-3 + 6z = 11
2x+6z=11+3
2x+6z=14 pers 7
pers 6 dan pers 7
3x+2z=7 x 3 9x+6z=21
2x+6z=14 x 1 2x+6z=14 -
--------------------
7x =7
x=1
masukkan x=1,y= -1 ke pers 1
3x+4y+2z=3
3(1)+4(-1)+2z=3
3-4+2z =3
2z=3-3+4
2z=4
z=2
sehingga x+2y+z = 1+2(-1)+2 = 1-2+2 = 1
Verified answer
[tex]x + 2y + z \\ 1 + 2( - 1) + 2 \\ 1 - 2 + 2 \\ 1[/tex]