Answers

Subtract 2/49 from 1/42

1/42 - 2/49 is -5/294.

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,
   1/42 = 1 × 7/42 × 7 = 7/294
3. Likewise, for the 2nd fraction, since 49 × 6 = 294,
   2/49 = 2 × 6/49 × 6 = 12/294
4. Subtract the two like fractions:
   7/294 - 12/294 = 7 - 12/294 = -5/294

MathStep (Works offline)

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

Related: ²/₄₂-²/₄₉ ¹/₄₂-⁴/₄₉ ¹/₈₄-²/₄₉ ¹/₄₂-²/₉₈ ³/₄₂-²/₄₉ ¹/₄₂-⁶/₄₉ ⁵/₄₂-²/₄₉ ¹/₄₂-¹⁰/₄₉ ⁷/₄₂-²/₄₉ ¹/₄₂-¹⁴/₄₉

Subtract Fractions Calculator