Add 20/98 and 81/40
1st number: 20/98, 2nd number: 2 1/40
20/98 + 81/40 is 4369/1960.
Steps for adding fractions
- 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 - For the 1st fraction, since 98 × 20 = 1960,
20/98 = 20 × 20/98 × 20 = 400/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
81/40 = 81 × 49/40 × 49 = 3969/1960 - Add the two like fractions:
400/1960 + 3969/1960 = 400 + 3969/1960 = 4369/1960 - So, 20/98 + 81/40 = 4369/1960
In mixed form: 2449/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98+81/40 20/98+81/80 60/98+81/40