Answers

Add 49/21 and 28/45

1^st number: 2 7/21, 2^nd number: 28/45

49/21 + 28/45 is 133/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   49/21 = 49 × 15/21 × 15 = 735/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   28/45 = 28 × 7/45 × 7 = 196/315
4. Add the two like fractions:
   735/315 + 196/315 = 735 + 196/315 = 931/315
5. 931/315 simplified gives 133/45
6. So, 49/21 + 28/45 = 133/45
   In mixed form: 243/45

MathStep (Works offline)

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

Related: ⁹⁸/₂₁+²⁸/₄₅ ⁴⁹/₂₁+⁵⁶/₄₅ ⁴⁹/₄₂+²⁸/₄₅ ⁴⁹/₂₁+²⁸/₉₀ ⁴⁹/₂₁+⁸⁴/₄₅ ⁴⁹/₆₃+²⁸/₄₅

Add Fractions Calculator