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Linear Systems
medium
0:00.0
Find
z
z
z
if
x
+
y
=
5
,
x
+
z
=
7
,
y
+
z
=
8
x+y=5, x+z=7, y+z=8
x
+
y
=
5
,
x
+
z
=
7
,
y
+
z
=
8
.
A
3
3
3
B
4
4
4
C
5
5
5
D
2
2
2
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