Add 42/20 and 6/28
1st number: 2 2/20, 2nd number: 6/28
42/20 + 6/28 is 81/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
42/20 = 42 × 7/20 × 7 = 294/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
6/28 = 6 × 5/28 × 5 = 30/140 - Add the two like fractions:
294/140 + 30/140 = 294 + 30/140 = 324/140 - 324/140 simplified gives 81/35
- So, 42/20 + 6/28 = 81/35
In mixed form: 211/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+6/28 42/20+12/28 42/40+6/28 42/20+6/56 42/20+18/28 42/60+6/28 42/20+6/84 42/20+30/28 42/20+42/28