Answers

Add 54/80 and 45/8

1^st number: 54/80, 2^nd number: 5 5/8

54/80 + 45/8 is 63/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 8 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   54/80 = 54 × 1/80 × 1 = 54/80
3. Likewise, for the 2nd fraction, since 8 × 10 = 80,
   45/8 = 45 × 10/8 × 10 = 450/80
4. Add the two like fractions:
   54/80 + 450/80 = 54 + 450/80 = 504/80
5. 504/80 simplified gives 63/10
6. So, 54/80 + 45/8 = 63/10
   In mixed form: 63/10

MathStep (Works offline)

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

Related: ⁵⁴/₈₀+⁹⁰/₈ ⁵⁴/₈₀+⁴⁵/₁₆ ⁵⁴/₈₀+⁴⁵/₂₄ ⁵⁴/₈₀+⁴⁵/₄₀ ⁵⁴/₈₀+⁴⁵/₅₆

Add Fractions Calculator