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Mathematics
Mathematics
Problem
The equations
x
−
4
=
9
x - 4 = 9
x
−
4
=
9
and
x
+
k
=
2
x + k = 2
x
+
k
=
2
are required to have the same solution for
x
x
x
. What is the value of
k
k
k
? a)
11
11
11
b)
13
13
13
c)
−
11
-11
−
11
d)
−
3
-3
−
3
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