Add 20/63 and 35/20
1st number: 20/63, 2nd number: 1 15/20
20/63 + 35/20 is 521/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
20/63 = 20 × 20/63 × 20 = 400/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
35/20 = 35 × 63/20 × 63 = 2205/1260 - Add the two like fractions:
400/1260 + 2205/1260 = 400 + 2205/1260 = 2605/1260 - 2605/1260 simplified gives 521/252
- So, 20/63 + 35/20 = 521/252
In mixed form: 217/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63+35/20 20/63+70/20 20/63+35/40 60/63+35/20 20/63+35/60