Subtracting fractions

Answer: 15647​

1. Use common denominator 156:1211​=156143​ and 138​=15696​.
2. Subtract the numerators: 156143−96​=15647​.
3. The fraction is already in simplest form: 15647​.

Answer: 20−3​

1. Use common denominator 20:41​=205​ and 52​=208​.
2. Subtract the numerators: 205−8​=20−3​.
3. The fraction is already in simplest form: 20−3​.

Answer: 10−1​

1. Use common denominator 20:42​=2010​ and 53​=2012​.
2. Subtract the numerators: 2010−12​=20−2​.
3. Divide numerator and denominator by 2:10−1​.