To subtract these fractions, you need to find a common denominator. In this case, the common denominator is 10.
So -3/10 becomes -6/10 (since -1/5 is equal to -2/10).
-6/10 - 2/10 = -8/10
Simplifying the fraction by dividing both the numerator and denominator by 2, we get:
-8/10 = -4/5
Therefore, -3/10 - 1/5 = -4/5.
To subtract these fractions, you need to find a common denominator. In this case, the common denominator is 10.
So -3/10 becomes -6/10 (since -1/5 is equal to -2/10).
-6/10 - 2/10 = -8/10
Simplifying the fraction by dividing both the numerator and denominator by 2, we get:
-8/10 = -4/5
Therefore, -3/10 - 1/5 = -4/5.