Answers

Add 84/72 and 63/12

1^st number: 1 12/72, 2^nd number: 5 3/12

84/72 + 63/12 is 77/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 12 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   84/72 = 84 × 1/72 × 1 = 84/72
3. Likewise, for the 2nd fraction, since 12 × 6 = 72,
   63/12 = 63 × 6/12 × 6 = 378/72
4. Add the two like fractions:
   84/72 + 378/72 = 84 + 378/72 = 462/72
5. 462/72 simplified gives 77/12
6. So, 84/72 + 63/12 = 77/12
   In mixed form: 65/12

MathStep (Works offline)

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

Related: ⁸⁴/₇₂+⁶³/₂₄ ⁸⁴/₇₂+⁶³/₃₆ ⁸⁴/₇₂+⁶³/₆₀ ⁸⁴/₇₂+⁶³/₈₄

Add Fractions Calculator