Answers

Subtract 70/42 from 4/63

1^st number: 4/63, 2^nd number: 1 28/42

4/63 - 70/42 is -101/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   4/63 = 4 × 2/63 × 2 = 8/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   70/42 = 70 × 3/42 × 3 = 210/126
4. Subtract the two like fractions:
   8/126 - 210/126 = 8 - 210/126 = -202/126
5. After reducing the fraction, the answer is -101/63

MathStep (Works offline)

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

Related: ⁸/₆₃-⁷⁰/₄₂ ⁴/₆₃-⁷⁰/₈₄ ¹²/₆₃-⁷⁰/₄₂ ²⁰/₆₃-⁷⁰/₄₂ ²⁸/₆₃-⁷⁰/₄₂

Subtract Fractions Calculator