Answers

Add 15/63 and 8/7

1^st number: 15/63, 2^nd number: 1 1/7

15/63 + 8/7 is 29/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   15/63 = 15 × 1/63 × 1 = 15/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   8/7 = 8 × 9/7 × 9 = 72/63
4. Add the two like fractions:
   15/63 + 72/63 = 15 + 72/63 = 87/63
5. 87/63 simplified gives 29/21
6. So, 15/63 + 8/7 = 29/21
   In mixed form: 18/21

MathStep (Works offline)

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

Related: ³⁰/₆₃+⁸/₇ ¹⁵/₆₃+¹⁶/₇ ¹⁵/₆₃+⁸/₁₄ ⁴⁵/₆₃+⁸/₇ ¹⁵/₆₃+²⁴/₇ ¹⁵/₆₃+⁸/₂₁ ⁷⁵/₆₃+⁸/₇ ¹⁵/₆₃+⁴⁰/₇ ¹⁵/₆₃+⁸/₃₅ ¹⁵/₆₃+⁵⁶/₇ ¹⁵/₆₃+⁸/₄₉

Add Fractions Calculator