Add 54/21 and 56/30
1st number: 2 12/21, 2nd number: 1 26/30
54/21 + 56/30 is 466/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
54/21 = 54 × 10/21 × 10 = 540/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
56/30 = 56 × 7/30 × 7 = 392/210 - Add the two like fractions:
540/210 + 392/210 = 540 + 392/210 = 932/210 - 932/210 simplified gives 466/105
- So, 54/21 + 56/30 = 466/105
In mixed form: 446/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+56/30 54/21+56/60 54/63+56/30 54/21+56/90