Add 72/12 and 20/63
1st number: 6 0/12, 2nd number: 20/63
72/12 + 20/63 is 398/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
72/12 = 72 × 21/12 × 21 = 1512/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
20/63 = 20 × 4/63 × 4 = 80/252 - Add the two like fractions:
1512/252 + 80/252 = 1512 + 80/252 = 1592/252 - 1592/252 simplified gives 398/63
- So, 72/12 + 20/63 = 398/63
In mixed form: 620/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+40/63 72/24+20/63 72/12+60/63 72/36+20/63 72/60+20/63 72/84+20/63