Add 54/56 and 21/35
54/56 + 21/35 is 219/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
21/35 = 21 × 8/35 × 8 = 168/280 - Add the two like fractions:
270/280 + 168/280 = 270 + 168/280 = 438/280 - 438/280 simplified gives 219/140
- So, 54/56 + 21/35 = 219/140
In mixed form: 179/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+42/35 54/56+21/70 54/56+63/35