Answers

Add 63/98 and 72/40

1^st number: 63/98, 2^nd number: 1 32/40

63/98 + 72/40 is 171/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 98 × 20 = 1960,
   63/98 = 63 × 20/98 × 20 = 1260/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   72/40 = 72 × 49/40 × 49 = 3528/1960
4. Add the two like fractions:
   1260/1960 + 3528/1960 = 1260 + 3528/1960 = 4788/1960
5. 4788/1960 simplified gives 171/70
6. So, 63/98 + 72/40 = 171/70
   In mixed form: 231/70

MathStep (Works offline)

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

Related: ⁶³/₉₈+⁷²/₈₀

Add Fractions Calculator