Answers

Add 6/8 and 81/60

1^st number: 6/8, 2^nd number: 1 21/60

6/8 + 81/60 is 21/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 60 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 8 × 15 = 120,
   6/8 = 6 × 15/8 × 15 = 90/120
3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
   81/60 = 81 × 2/60 × 2 = 162/120
4. Add the two like fractions:
   90/120 + 162/120 = 90 + 162/120 = 252/120
5. 252/120 simplified gives 21/10
6. So, 6/8 + 81/60 = 21/10
   In mixed form: 21/10

MathStep (Works offline)

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

Related: ¹²/₈+⁸¹/₆₀ ⁶/₁₆+⁸¹/₆₀ ¹⁸/₈+⁸¹/₆₀ ⁶/₂₄+⁸¹/₆₀ ³⁰/₈+⁸¹/₆₀ ⁶/₄₀+⁸¹/₆₀ ⁴²/₈+⁸¹/₆₀ ⁶/₅₆+⁸¹/₆₀

Add Fractions Calculator