Add 30/48 and 63/45
1st number: 30/48, 2nd number: 1 18/45
30/48 + 63/45 is 81/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
30/48 = 30 × 15/48 × 15 = 450/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
63/45 = 63 × 16/45 × 16 = 1008/720 - Add the two like fractions:
450/720 + 1008/720 = 450 + 1008/720 = 1458/720 - 1458/720 simplified gives 81/40
- So, 30/48 + 63/45 = 81/40
In mixed form: 21/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/48+63/45 30/96+63/45 30/48+63/90 90/48+63/45