Add 42/56 and 50/20
1st number: 42/56, 2nd number: 2 10/20
42/56 + 50/20 is 13/4.
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,
50/20 = 50 × 14/20 × 14 = 700/280 - Add the two like fractions:
210/280 + 700/280 = 210 + 700/280 = 910/280 - 910/280 simplified gives 13/4
- So, 42/56 + 50/20 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+50/20 42/56+50/40 42/56+50/60