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Question 7
Math
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Question
Prompt
If
a
=
3
k
+
4
r
and
b
=
9
k
−
12
r
+
6
, which expression is equivalent to
a
−
b
?
−
6
k
+
16
r
−
6
A
−
6
k
+
16
r
+
6
B
−
6
k
−
8
r
+
6
C
−
6
k
−
8
r
≥
6
D
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