Answers

Add 2/15 and 40/21

1^st number: 2/15, 2^nd number: 1 19/21

2/15 + 40/21 is 214/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   2/15 = 2 × 7/15 × 7 = 14/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   40/21 = 40 × 5/21 × 5 = 200/105
4. Add the two like fractions:
   14/105 + 200/105 = 14 + 200/105 = 214/105
5. So, 2/15 + 40/21 = 214/105
   In mixed form: 24/105

MathStep (Works offline)

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

Related: ⁴/₁₅+⁴⁰/₂₁ ²/₁₅+⁸⁰/₂₁ ²/₃₀+⁴⁰/₂₁ ²/₁₅+⁴⁰/₄₂ ⁶/₁₅+⁴⁰/₂₁ ²/₄₅+⁴⁰/₂₁ ²/₁₅+⁴⁰/₆₃ ¹⁰/₁₅+⁴⁰/₂₁ ²/₇₅+⁴⁰/₂₁ ¹⁴/₁₅+⁴⁰/₂₁

Add Fractions Calculator