Answers

Subtract 70/50 from 15/63

1^st number: 15/63, 2^nd number: 1 20/50

15/63 - 70/50 is -122/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 50 is 3150
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3150
2. For the 1st fraction, since 63 × 50 = 3150,
   15/63 = 15 × 50/63 × 50 = 750/3150
3. Likewise, for the 2nd fraction, since 50 × 63 = 3150,
   70/50 = 70 × 63/50 × 63 = 4410/3150
4. Subtract the two like fractions:
   750/3150 - 4410/3150 = 750 - 4410/3150 = -3660/3150
5. After reducing the fraction, the answer is -122/105

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ³⁰/₆₃-⁷⁰/₅₀ ⁴⁵/₆₃-⁷⁰/₅₀ ⁷⁵/₆₃-⁷⁰/₅₀

Subtract Fractions Calculator