Add 28/30 and 20/56
28/30 + 20/56 is 271/210.
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,
28/30 = 28 × 28/30 × 28 = 784/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
20/56 = 20 × 15/56 × 15 = 300/840 - Add the two like fractions:
784/840 + 300/840 = 784 + 300/840 = 1084/840 - 1084/840 simplified gives 271/210
- So, 28/30 + 20/56 = 271/210
In mixed form: 161/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+20/56 28/30+40/56 28/60+20/56 84/30+20/56 28/30+60/56 28/90+20/56