Answers

Add 98/42 and 63/90

1^st number: 2 14/42, 2^nd number: 63/90

98/42 + 63/90 is 91/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   98/42 = 98 × 15/42 × 15 = 1470/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   63/90 = 63 × 7/90 × 7 = 441/630
4. Add the two like fractions:
   1470/630 + 441/630 = 1470 + 441/630 = 1911/630
5. 1911/630 simplified gives 91/30
6. So, 98/42 + 63/90 = 91/30
   In mixed form: 31/30

MathStep (Works offline)

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

Related: ⁹⁸/₈₄+⁶³/₉₀

Add Fractions Calculator