Add 9/45 and 21/48
9/45 + 21/48 is 51/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
9/45 = 9 × 16/45 × 16 = 144/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
21/48 = 21 × 15/48 × 15 = 315/720 - Add the two like fractions:
144/720 + 315/720 = 144 + 315/720 = 459/720 - 459/720 simplified gives 51/80
- So, 9/45 + 21/48 = 51/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/45+21/48 9/45+42/48 9/90+21/48 9/45+21/96 27/45+21/48 9/45+63/48 63/45+21/48