Add 21/27 and 30/56
21/27 + 30/56 is 331/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 27 × 56 = 1512,
21/27 = 21 × 56/27 × 56 = 1176/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
30/56 = 30 × 27/56 × 27 = 810/1512 - Add the two like fractions:
1176/1512 + 810/1512 = 1176 + 810/1512 = 1986/1512 - 1986/1512 simplified gives 331/252
- So, 21/27 + 30/56 = 331/252
In mixed form: 179/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27+30/56 21/27+60/56 21/54+30/56 63/27+30/56 21/27+90/56 21/81+30/56