Add and/or subtract and then simplify completely:

$\displaystyle \frac{{{5}{a}}}{{{a}^{{2}}-{49}}}-\frac{{2}}{{{a}-{7}}}$

Enter the numerator and denominator separately in the boxes below. If the denominator is 1, enter the number 1. Do not leave either box blank.
Answer:
Numerator preview: Preview Question 6 Part 1 of 2  
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