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Mathematics
Mathematics
Problem
Simplify
∑
k
=
1
12
5
+
3
∑
k
=
1
12
1
\displaystyle \sum_{k=1}^{12} 5 \; + \; 3\sum_{k=1}^{12} 1
k
=
1
∑
12
5
+
3
k
=
1
∑
12
1
.
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