计算器
a
1
x +
b
1
y +
c
1
z =
d
1
a
2
x +
b
2
y +
c
2
z =
d
2
a
3
x +
b
3
y +
c
3
z =
d
3
a
1
=
b
1
=
c
1
=
d
1
=
a
2
=
b
2
=
c
2
=
d
2
=
a
3
=
b
3
=
c
3
=
d
3
=
x =
y =
z =