Add 20/48 and 72/63
1st number: 20/48, 2nd number: 1 9/63
20/48 + 72/63 is 131/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 63 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 48 × 21 = 1008,
20/48 = 20 × 21/48 × 21 = 420/1008 - Likewise, for the 2nd fraction, since 63 × 16 = 1008,
72/63 = 72 × 16/63 × 16 = 1152/1008 - Add the two like fractions:
420/1008 + 1152/1008 = 420 + 1152/1008 = 1572/1008 - 1572/1008 simplified gives 131/84
- So, 20/48 + 72/63 = 131/84
In mixed form: 147/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/48+72/63 20/96+72/63 60/48+72/63