Answers

Add 54/8 and 45/30

1^st number: 6 6/8, 2^nd number: 1 15/30

54/8 + 45/30 is 33/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 30 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 8 × 15 = 120,
   54/8 = 54 × 15/8 × 15 = 810/120
3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
   45/30 = 45 × 4/30 × 4 = 180/120
4. Add the two like fractions:
   810/120 + 180/120 = 810 + 180/120 = 990/120
5. 990/120 simplified gives 33/4
6. So, 54/8 + 45/30 = 33/4
   In mixed form: 81/4

MathStep (Works offline)

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

Related: ⁵⁴/₈+⁹⁰/₃₀ ⁵⁴/₁₆+⁴⁵/₃₀ ⁵⁴/₈+⁴⁵/₆₀ ⁵⁴/₂₄+⁴⁵/₃₀ ⁵⁴/₈+⁴⁵/₉₀ ⁵⁴/₄₀+⁴⁵/₃₀ ⁵⁴/₅₆+⁴⁵/₃₀

Add Fractions Calculator