Answers

Add 21/14 and 63/30

1^st number: 1 7/14, 2^nd number: 2 3/30

21/14 + 63/30 is 18/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 30 is 210
2. For the 1st fraction, since 14 × 15 = 210,
   21/14 = 21 × 15/14 × 15 = 315/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   63/30 = 63 × 7/30 × 7 = 441/210
4. Add the two fractions:
   315/210 + 441/210 = 315 + 441/210 = 756/210
5. 756/210 simplified gives 18/5
6. So, 21/14 + 63/30 = 18/5
   In mixed form: 33/5

MathStep (Works offline)

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

Related: ⁴²/₁₄+⁶³/₃₀ ²¹/₂₈+⁶³/₃₀ ²¹/₁₄+⁶³/₆₀ ⁶³/₁₄+⁶³/₃₀ ²¹/₄₂+⁶³/₃₀ ²¹/₁₄+⁶³/₉₀ ²¹/₇₀+⁶³/₃₀ ²¹/₉₈+⁶³/₃₀

Add Fractions Calculator