Add 42/28 and 27/30
1st number: 1 14/28, 2nd number: 27/30
42/28 + 27/30 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
42/28 = 42 × 15/28 × 15 = 630/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
27/30 = 27 × 14/30 × 14 = 378/420 - Add the two like fractions:
630/420 + 378/420 = 630 + 378/420 = 1008/420 - 1008/420 simplified gives 12/5
- So, 42/28 + 27/30 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+27/30 42/28+54/30 42/56+27/30 42/28+27/60 42/28+81/30 42/84+27/30 42/28+27/90