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12
+
8
12+8
1
2
+
8
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
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12+8
12+8
12+8
Available Methods
Algorithm
Partial Sum
Decomposition
1
Use the algorithm method.
1
1
2
+
8
2
0
2
Therefore,
12
+
8
=
20
12+8=20
1
2
+
8
=
2
0
.
20
20
2
0
Done
20
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