Add 20/56 and 9/90
20/56 + 9/90 is 16/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
20/56 = 20 × 45/56 × 45 = 900/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
9/90 = 9 × 28/90 × 28 = 252/2520 - Add the two like fractions:
900/2520 + 252/2520 = 900 + 252/2520 = 1152/2520 - 1152/2520 simplified gives 16/35
- So, 20/56 + 9/90 = 16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+9/90 20/56+18/90 60/56+9/90 20/56+27/90 20/56+45/90 20/56+63/90