Add 28/56 and 7/30
28/56 + 7/30 is 11/15.
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,
28/56 = 28 × 15/56 × 15 = 420/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
7/30 = 7 × 28/30 × 28 = 196/840 - Add the two like fractions:
420/840 + 196/840 = 420 + 196/840 = 616/840 - 616/840 simplified gives 11/15
- So, 28/56 + 7/30 = 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+14/30 28/56+7/60 84/56+7/30 28/56+21/30 28/56+7/90 28/56+35/30 28/56+49/30