Answers

Add 21/8 and 56/60

1^st number: 2 5/8, 2^nd number: 56/60

21/8 + 56/60 is 427/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 60 is 120
2. For the 1st fraction, since 8 × 15 = 120,
   21/8 = 21 × 15/8 × 15 = 315/120
3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
   56/60 = 56 × 2/60 × 2 = 112/120
4. Add the two fractions:
   315/120 + 112/120 = 315 + 112/120 = 427/120
5. So, 21/8 + 56/60 = 427/120
   In mixed form: 367/120

MathStep (Works offline)

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

Related: ⁴²/₈+⁵⁶/₆₀ ²¹/₁₆+⁵⁶/₆₀ ⁶³/₈+⁵⁶/₆₀ ²¹/₂₄+⁵⁶/₆₀ ²¹/₄₀+⁵⁶/₆₀ ²¹/₅₆+⁵⁶/₆₀

Add Fractions Calculator