Add 20/56 and 20/70
20/56 + 20/70 is 9/14.
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,
20/70 = 20 × 4/70 × 4 = 80/280 - Add the two like fractions:
100/280 + 80/280 = 100 + 80/280 = 180/280 - 180/280 simplified gives 9/14
- So, 20/56 + 20/70 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+20/70 20/56+40/70 60/56+20/70 20/56+60/70