Answers

2014-02-10T18:37:40+08:00
Let's look at it, one by one.
First:

- 5 times of a added to 1
a subtracted to 3
Combine them as if:
5 times of a added to 1 multiplied, a subtracted to 3, multiplied together.

Second:

p added to 4
p added to 4 multiplied to 2
- p added to 4 multiplied to 2 divided by 10
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