Add 45/56 and 16/20
45/56 + 16/20 is 449/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
45/56 = 45 × 5/56 × 5 = 225/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
16/20 = 16 × 14/20 × 14 = 224/280 - Add the two like fractions:
225/280 + 224/280 = 225 + 224/280 = 449/280 - So, 45/56 + 16/20 = 449/280
In mixed form: 1169/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56+16/20 45/56+32/20 45/56+16/40 45/56+48/20 45/56+16/60 45/56+80/20