Answer: ⇒ ![-\frac{3}{20}](https://tex.z-dn.net/?f=-%5Cfrac%7B3%7D%7B20%7D)
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Step-by-step explanation:
First you had to remove parenthesis first.
![\frac{7}{10}- \frac{17}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B10%7D-%20%5Cfrac%7B17%7D%7B20%7D)
![=\frac{14}{20}-\frac{17}{20}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B14%7D%7B20%7D-%5Cfrac%7B17%7D%7B20%7D)
Since the denominator are equal, and then you had to combine by the fraction.
![\frac{14-17}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B14-17%7D%7B20%7D)
Subtract by the numbers.
![\frac{-3}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B-3%7D%7B20%7D)
Apply the fraction rule.
![=-\frac{3}{20}](https://tex.z-dn.net/?f=%3D-%5Cfrac%7B3%7D%7B20%7D)
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Hope this helps!
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Have a great day!
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