Add 30/21 and 10/56
1st number: 1 9/21, 2nd number: 10/56
30/21 + 10/56 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
30/21 = 30 × 8/21 × 8 = 240/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
10/56 = 10 × 3/56 × 3 = 30/168 - Add the two like fractions:
240/168 + 30/168 = 240 + 30/168 = 270/168 - 270/168 simplified gives 45/28
- So, 30/21 + 10/56 = 45/28
In mixed form: 117/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+10/56 30/21+20/56 30/42+10/56 90/21+10/56 30/21+30/56 30/63+10/56 30/21+50/56 30/21+70/56