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Foundations
medium
0:00.0
If
x
+
y
=
10
x + y = 10
x
+
y
=
10
and
x
−
y
=
2
x - y = 2
x
−
y
=
2
, what is
x
x
x
?
A
8
8
8
B
6
6
6
C
5
5
5
D
4
4
4
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