Add 12/56 and 81/30
1st number: 12/56, 2nd number: 2 21/30
12/56 + 81/30 is 102/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
12/56 = 12 × 15/56 × 15 = 180/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
81/30 = 81 × 28/30 × 28 = 2268/840 - Add the two like fractions:
180/840 + 2268/840 = 180 + 2268/840 = 2448/840 - 2448/840 simplified gives 102/35
- So, 12/56 + 81/30 = 102/35
In mixed form: 232/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/56+81/30 12/56+81/60 36/56+81/30 12/56+81/90 60/56+81/30 84/56+81/30