Answers

Add 6/21 and 54/45

1^st number: 6/21, 2^nd number: 1 9/45

6/21 + 54/45 is 52/35.

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,
   6/21 = 6 × 15/21 × 15 = 90/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   54/45 = 54 × 7/45 × 7 = 378/315
4. Add the two like fractions:
   90/315 + 378/315 = 90 + 378/315 = 468/315
5. 468/315 simplified gives 52/35
6. So, 6/21 + 54/45 = 52/35
   In mixed form: 117/35

MathStep (Works offline)

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

Related: ¹²/₂₁+⁵⁴/₄₅ ⁶/₄₂+⁵⁴/₄₅ ⁶/₂₁+⁵⁴/₉₀ ¹⁸/₂₁+⁵⁴/₄₅ ⁶/₆₃+⁵⁴/₄₅ ³⁰/₂₁+⁵⁴/₄₅ ⁴²/₂₁+⁵⁴/₄₅

Add Fractions Calculator