Answers

Add 84/63 and 35/45

1^st number: 1 21/63, 2^nd number: 35/45

84/63 + 35/45 is 19/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   84/63 = 84 × 5/63 × 5 = 420/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   35/45 = 35 × 7/45 × 7 = 245/315
4. Add the two like fractions:
   420/315 + 245/315 = 420 + 245/315 = 665/315
5. 665/315 simplified gives 19/9
6. So, 84/63 + 35/45 = 19/9
   In mixed form: 21/9

MathStep (Works offline)

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

Related: ⁸⁴/₆₃+⁷⁰/₄₅ ⁸⁴/₆₃+³⁵/₉₀

Add Fractions Calculator