Add 7/30 and 81/56
1st number: 7/30, 2nd number: 1 25/56
7/30 + 81/56 is 1411/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
7/30 = 7 × 28/30 × 28 = 196/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
81/56 = 81 × 15/56 × 15 = 1215/840 - Add the two like fractions:
196/840 + 1215/840 = 196 + 1215/840 = 1411/840 - So, 7/30 + 81/56 = 1411/840
In mixed form: 1571/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+81/56 7/60+81/56 21/30+81/56 7/90+81/56 35/30+81/56 49/30+81/56