Add 20/56 and 30/70
20/56 + 30/70 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
20/56 = 20 × 5/56 × 5 = 100/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
30/70 = 30 × 4/70 × 4 = 120/280 - Add the two like fractions:
100/280 + 120/280 = 100 + 120/280 = 220/280 - 220/280 simplified gives 11/14
- So, 20/56 + 30/70 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+30/70 20/56+60/70 60/56+30/70 20/56+90/70