Add 42/28 and 7/20
1st number: 1 14/28, 2nd number: 7/20
42/28 + 7/20 is 37/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Add the two like fractions:
210/140 + 49/140 = 210 + 49/140 = 259/140 - 259/140 simplified gives 37/20
- So, 42/28 + 7/20 = 37/20
In mixed form: 117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+7/20 42/28+14/20 42/56+7/20 42/28+7/40 42/28+21/20 42/84+7/20 42/28+7/60 42/28+35/20 42/28+49/20