Answers

Add 48/63 and 21/12

1^st number: 48/63, 2^nd number: 1 9/12

48/63 + 21/12 is 211/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 12 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   48/63 = 48 × 4/63 × 4 = 192/252
3. Likewise, for the 2nd fraction, since 12 × 21 = 252,
   21/12 = 21 × 21/12 × 21 = 441/252
4. Add the two like fractions:
   192/252 + 441/252 = 192 + 441/252 = 633/252
5. 633/252 simplified gives 211/84
6. So, 48/63 + 21/12 = 211/84
   In mixed form: 243/84

MathStep (Works offline)

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

Related: ⁹⁶/₆₃+²¹/₁₂ ⁴⁸/₆₃+⁴²/₁₂ ⁴⁸/₆₃+²¹/₂₄ ⁴⁸/₆₃+⁶³/₁₂ ⁴⁸/₆₃+²¹/₃₆ ⁴⁸/₆₃+²¹/₆₀ ⁴⁸/₆₃+²¹/₈₄

Add Fractions Calculator