Add 42/56 and 6/20
42/56 + 6/20 is 21/20.
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,
42/56 = 42 × 5/56 × 5 = 210/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
6/20 = 6 × 14/20 × 14 = 84/280 - Add the two like fractions:
210/280 + 84/280 = 210 + 84/280 = 294/280 - 294/280 simplified gives 21/20
- So, 42/56 + 6/20 = 21/20
In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+6/20 42/56+12/20 42/56+6/40 42/56+18/20 42/56+6/60 42/56+30/20 42/56+42/20