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Question 6
Math
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Question
Prompt
If
a
=
4
k
+
7
r
and
b
=
9
k
−
11
r
+
5
which expression is equivalent to
a
−
b
?
−
5
k
+
18
r
+
5
A
−
5
k
+
18
r
−
5
B
−
5
k
−
4
r
−
5
C
−
5
k
−
4
r
+
5
D
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