Add 15/30 and 27/56
15/30 + 27/56 is 55/56.
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,
15/30 = 15 × 28/30 × 28 = 420/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
27/56 = 27 × 15/56 × 15 = 405/840 - Add the two like fractions:
420/840 + 405/840 = 420 + 405/840 = 825/840 - 825/840 simplified gives 55/56
- So, 15/30 + 27/56 = 55/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30+54/56 15/60+27/56 45/30+27/56 15/30+81/56 15/90+27/56 75/30+27/56