Bantu saya mengerjakan soal ini ya
4x + 3y - 2z =1
2x - y +z =3
x + 2y + 3z =-1
dan
3/x - 2/y + 1/z =5
1/x - 5/y + 3/z =2
2/x + 1/y +1/z =12
4x + 3y - 2z =1
2x - y +z =3
x + 2y + 3z =-1
dan
3/x - 2/y + 1/z =5
1/x - 5/y + 3/z =2
2/x + 1/y +1/z =12
2x - y + z = 3 | × 2
4x + 3y - 2z = 1
4x - 2y + 2z = 6
8x + y = 7 ... (1)
4x + 3y - 2z = 1 | × 3
x + 2y + 3z = -1 | × 2
12x + 9y - 6z = 3
2x + 4y + 6z = -2
14x + 13y = 1 ... (2)
8x + y = 7 | × 13
14x + 13y = 1 | × 1
104x + 13y = 91
14x + 13y = 1
90x = 90
x = 1
8x + y = 7
8 + y = 7
y = 7 - 8 = -1