Answers

Subtract 21/40 from 49/15

1^st number: 3 4/15, 2^nd number: 21/40

49/15 - 21/40 is 329/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 15 × 8 = 120,
   49/15 = 49 × 8/15 × 8 = 392/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   21/40 = 21 × 3/40 × 3 = 63/120
4. Subtract the two like fractions:
   392/120 - 63/120 = 392 - 63/120 = 329/120
5. In mixed form: 289/120

MathStep (Works offline)

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

Related: ⁹⁸/₁₅-²¹/₄₀ ⁴⁹/₁₅-⁴²/₄₀ ⁴⁹/₃₀-²¹/₄₀ ⁴⁹/₁₅-²¹/₈₀ ⁴⁹/₁₅-⁶³/₄₀ ⁴⁹/₄₅-²¹/₄₀ ⁴⁹/₇₅-²¹/₄₀

Subtract Fractions Calculator