Selesaikan X-2y+Z =63x+y-2z=47x-6y-z=10
Jawab:
x=19/7
y=1/7
z=3
Penjelasan dengan langkah-langkah:
x-2y+z=6
3x+y-2z=4
7x-6y-z=10
x=6+2y-z
3(6+2y-z)+y-2z=4
18+6y-3z+y-2z=4
18+7y-5z=4
7y-5z=4-18
7y-5z=-14
7y=-14+5z
y= -2+5/7z
7(6+2(-2+5/7z)-z)-6(-2+5/7z)-z=10
7(6-4+10/7z-z)+12-30/7z-z=10
z=3