Answers

Add 84/63 and 35/90

1^st number: 1 21/63, 2^nd number: 35/90

84/63 + 35/90 is 31/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   84/63 = 84 × 10/63 × 10 = 840/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   35/90 = 35 × 7/90 × 7 = 245/630
4. Add the two like fractions:
   840/630 + 245/630 = 840 + 245/630 = 1085/630
5. 1085/630 simplified gives 31/18
6. So, 84/63 + 35/90 = 31/18
   In mixed form: 113/18

MathStep (Works offline)

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

Related: ⁸⁴/₆₃+⁷⁰/₉₀

Add Fractions Calculator