Answers

Subtract 15/28 from 21/10

1^st number: 2 1/10, 2^nd number: 15/28

21/10 - 15/28 is 219/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 10 × 14 = 140,
   21/10 = 21 × 14/10 × 14 = 294/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   15/28 = 15 × 5/28 × 5 = 75/140
4. Subtract the two like fractions:
   294/140 - 75/140 = 294 - 75/140 = 219/140
5. In mixed form: 179/140

MathStep (Works offline)

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

Related: ⁴²/₁₀-¹⁵/₂₈ ²¹/₁₀-³⁰/₂₈ ²¹/₂₀-¹⁵/₂₈ ²¹/₁₀-¹⁵/₅₆ ⁶³/₁₀-¹⁵/₂₈ ²¹/₁₀-⁴⁵/₂₈ ²¹/₃₀-¹⁵/₂₈ ²¹/₁₀-¹⁵/₈₄ ²¹/₁₀-⁷⁵/₂₈ ²¹/₅₀-¹⁵/₂₈ ²¹/₇₀-¹⁵/₂₈

Subtract Fractions Calculator