Add 9/20 and 9/56
9/20 + 9/56 is 171/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
9/20 = 9 × 14/20 × 14 = 126/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
9/56 = 9 × 5/56 × 5 = 45/280 - Add the two like fractions:
126/280 + 45/280 = 126 + 45/280 = 171/280 - So, 9/20 + 9/56 = 171/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+9/56 9/20+18/56 9/40+9/56 27/20+9/56 9/20+27/56 9/60+9/56 45/20+9/56 9/20+45/56 63/20+9/56 9/20+63/56