Add 30/54 and 45/56
30/54 + 45/56 is 685/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 54 × 28 = 1512,
30/54 = 30 × 28/54 × 28 = 840/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
45/56 = 45 × 27/56 × 27 = 1215/1512 - Add the two like fractions:
840/1512 + 1215/1512 = 840 + 1215/1512 = 2055/1512 - 2055/1512 simplified gives 685/504
- So, 30/54 + 45/56 = 685/504
In mixed form: 1181/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+45/56 30/54+90/56 90/54+45/56