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Linear Systems
medium
0:00.0
Solve
x
+
y
+
z
=
6
x + y + z = 6
x
+
y
+
z
=
6
,
y
+
z
=
5
y + z = 5
y
+
z
=
5
,
z
=
3
z = 3
z
=
3
. What is
x
x
x
?
A
1
B
2
C
3
D
4
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