Answers

Add 16/63 and 15/81

16/63 + 15/81 is 83/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 63 × 9 = 567,
   16/63 = 16 × 9/63 × 9 = 144/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   15/81 = 15 × 7/81 × 7 = 105/567
4. Add the two like fractions:
   144/567 + 105/567 = 144 + 105/567 = 249/567
5. 249/567 simplified gives 83/189
6. So, 16/63 + 15/81 = 83/189

MathStep (Works offline)

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

Related: ³²/₆₃+¹⁵/₈₁ ¹⁶/₆₃+³⁰/₈₁ ⁴⁸/₆₃+¹⁵/₈₁ ¹⁶/₆₃+⁴⁵/₈₁ ⁸⁰/₆₃+¹⁵/₈₁ ¹⁶/₆₃+⁷⁵/₈₁

Add Fractions Calculator