Add 27/4 and 21/45
1st number: 6 3/4, 2nd number: 21/45
27/4 + 21/45 is 433/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
27/4 = 27 × 45/4 × 45 = 1215/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
21/45 = 21 × 4/45 × 4 = 84/180 - Add the two like fractions:
1215/180 + 84/180 = 1215 + 84/180 = 1299/180 - 1299/180 simplified gives 433/60
- So, 27/4 + 21/45 = 433/60
In mixed form: 713/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/4+21/45 27/4+42/45 27/8+21/45 27/4+21/90 81/4+21/45 27/4+63/45 27/12+21/45 27/20+21/45 27/28+21/45