Answers

Add 3/20 and 45/80

3/20 + 45/80 is 57/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   3/20 = 3 × 4/20 × 4 = 12/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   45/80 = 45 × 1/80 × 1 = 45/80
4. Add the two like fractions:
   12/80 + 45/80 = 12 + 45/80 = 57/80
5. So, 3/20 + 45/80 = 57/80

MathStep (Works offline)

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

Related: ⁶/₂₀+⁴⁵/₈₀ ³/₂₀+⁹⁰/₈₀ ³/₄₀+⁴⁵/₈₀ ⁹/₂₀+⁴⁵/₈₀ ³/₆₀+⁴⁵/₈₀ ¹⁵/₂₀+⁴⁵/₈₀ ²¹/₂₀+⁴⁵/₈₀

Add Fractions Calculator