Add 72/20 and 35/63
1st number: 3 12/20, 2nd number: 35/63
72/20 + 35/63 is 187/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
72/20 = 72 × 63/20 × 63 = 4536/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
35/63 = 35 × 20/63 × 20 = 700/1260 - Add the two like fractions:
4536/1260 + 700/1260 = 4536 + 700/1260 = 5236/1260 - 5236/1260 simplified gives 187/45
- So, 72/20 + 35/63 = 187/45
In mixed form: 47/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+70/63 72/40+35/63 72/60+35/63