Add 72/70 and 28/60
1st number: 1 2/70, 2nd number: 28/60
72/70 + 28/60 is 157/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
72/70 = 72 × 6/70 × 6 = 432/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
28/60 = 28 × 7/60 × 7 = 196/420 - Add the two like fractions:
432/420 + 196/420 = 432 + 196/420 = 628/420 - 628/420 simplified gives 157/105
- So, 72/70 + 28/60 = 157/105
In mixed form: 152/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+56/60 72/70+84/60