Answers

Subtract 4/72 from 75/42

1^st number: 1 33/42, 2^nd number: 4/72

75/42 - 4/72 is 109/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   75/42 = 75 × 12/42 × 12 = 900/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   4/72 = 4 × 7/72 × 7 = 28/504
4. Subtract the two like fractions:
   900/504 - 28/504 = 900 - 28/504 = 872/504
5. After reducing the fraction, the answer is 109/63
6. In mixed form: 146/63

MathStep (Works offline)

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

Related: ⁷⁵/₄₂-⁸/₇₂ ⁷⁵/₈₄-⁴/₇₂ ⁷⁵/₄₂-¹²/₇₂ ⁷⁵/₄₂-²⁰/₇₂ ⁷⁵/₄₂-²⁸/₇₂

Subtract Fractions Calculator