Jawabanmu

2013-12-07T10:58:49+07:00
Ax + By +Z = 8
ax +by +cZ= 3
ax+by=1      berarti
ax+by+z=8      1+z=8    z=7
ax+by+cZ=3    1+7c=3    7c=2    c=7/2

mungkin ya.....
2013-12-07T14:50:08+07:00
Nah kan ax + by = 1
jadi kita masukkan yg di atas ke dalam dua persamaan yang lain. :)
ax + by + z = 8 .......(pers. 1)
1 + z = 8
z = 8 - 1
z = 7

ax + by + cz = 3
1 + cz = 3
1 + c (7) = 3
1 + 7c = 3
7c = 3 - 1
7c = 2
c = 7/2

semoga membantu^^ Gbu.