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2003 AMC 12B
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Which of the following is the same as
2
−
4
+
6
−
8
+
10
−
12
+
14
3
−
6
+
9
−
12
+
15
−
18
+
21
\dfrac{2-4+6-8+10-12+14}{3-6+9-12+15-18+21}
3
−
6
+
9
−
12
+
15
−
18
+
21
2
−
4
+
6
−
8
+
10
−
12
+
14
?
A
−
1
-1
−
1
B
−
2
3
-\dfrac{2}{3}
−
3
2
C
2
3
\dfrac{2}{3}
3
2
D
1
1
1
E
14
3
\dfrac{14}{3}
3
14
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