Add 9/60 and 28/70
9/60 + 28/70 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
9/60 = 9 × 7/60 × 7 = 63/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
28/70 = 28 × 6/70 × 6 = 168/420 - Add the two like fractions:
63/420 + 168/420 = 63 + 168/420 = 231/420 - 231/420 simplified gives 11/20
- So, 9/60 + 28/70 = 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/60+28/70 9/60+56/70 27/60+28/70 9/60+84/70 45/60+28/70 63/60+28/70