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Linear Systems
medium
0:00.0
Solve for
x
x
x
:
x
+
y
=
12
x + y = 12
x
+
y
=
12
and
x
−
y
=
4
x - y = 4
x
−
y
=
4
.
A
8
8
8
B
4
4
4
C
16
16
16
D
2
2
2
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