Add 20/56 and 45/84
20/56 + 45/84 is 25/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
20/56 = 20 × 3/56 × 3 = 60/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
45/84 = 45 × 2/84 × 2 = 90/168 - Add the two like fractions:
60/168 + 90/168 = 60 + 90/168 = 150/168 - 150/168 simplified gives 25/28
- So, 20/56 + 45/84 = 25/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+45/84 20/56+90/84 60/56+45/84