Answers

Add 90/12 and 64/63

1^st number: 7 6/12, 2^nd number: 1 1/63

90/12 + 64/63 is 1073/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 12 × 21 = 252,
   90/12 = 90 × 21/12 × 21 = 1890/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   64/63 = 64 × 4/63 × 4 = 256/252
4. Add the two like fractions:
   1890/252 + 256/252 = 1890 + 256/252 = 2146/252
5. 2146/252 simplified gives 1073/126
6. So, 90/12 + 64/63 = 1073/126
   In mixed form: 865/126

MathStep (Works offline)

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

Related: ⁹⁰/₂₄+⁶⁴/₆₃ ⁹⁰/₃₆+⁶⁴/₆₃ ⁹⁰/₆₀+⁶⁴/₆₃ ⁹⁰/₈₄+⁶⁴/₆₃

Add Fractions Calculator