Add 42/28 and 72/60
1st number: 1 14/28, 2nd number: 1 12/60
42/28 + 72/60 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 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 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Add the two like fractions:
630/420 + 504/420 = 630 + 504/420 = 1134/420 - 1134/420 simplified gives 27/10
- So, 42/28 + 72/60 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+72/60 42/56+72/60 42/84+72/60