Answers

Add 45/63 and 5/20

45/63 + 5/20 is 27/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 20 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   45/63 = 45 × 20/63 × 20 = 900/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   5/20 = 5 × 63/20 × 63 = 315/1260
4. Add the two like fractions:
   900/1260 + 315/1260 = 900 + 315/1260 = 1215/1260
5. 1215/1260 simplified gives 27/28
6. So, 45/63 + 5/20 = 27/28

MathStep (Works offline)

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

Related: ⁹⁰/₆₃+⁵/₂₀ ⁴⁵/₆₃+¹⁰/₂₀ ⁴⁵/₆₃+⁵/₄₀ ⁴⁵/₆₃+¹⁵/₂₀ ⁴⁵/₆₃+⁵/₆₀ ⁴⁵/₆₃+²⁵/₂₀ ⁴⁵/₆₃+³⁵/₂₀

Add Fractions Calculator