Answers

Subtract 7/49 from 5/42

5/42 - 7/49 is -1/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 49 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 42 × 7 = 294,
   5/42 = 5 × 7/42 × 7 = 35/294
3. Likewise, for the 2nd fraction, since 49 × 6 = 294,
   7/49 = 7 × 6/49 × 6 = 42/294
4. Subtract the two like fractions:
   35/294 - 42/294 = 35 - 42/294 = -7/294
5. After reducing the fraction, the answer is -1/42

MathStep (Works offline)

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

Related: ¹⁰/₄₂-⁷/₄₉ ⁵/₄₂-¹⁴/₄₉ ⁵/₈₄-⁷/₄₉ ⁵/₄₂-⁷/₉₈ ¹⁵/₄₂-⁷/₄₉ ⁵/₄₂-²¹/₄₉ ²⁵/₄₂-⁷/₄₉ ⁵/₄₂-³⁵/₄₉ ³⁵/₄₂-⁷/₄₉

Subtract Fractions Calculator