Add 20/35 and 30/60
20/35 + 30/60 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
20/35 = 20 × 12/35 × 12 = 240/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
30/60 = 30 × 7/60 × 7 = 210/420 - Add the two like fractions:
240/420 + 210/420 = 240 + 210/420 = 450/420 - 450/420 simplified gives 15/14
- So, 20/35 + 30/60 = 15/14
In mixed form: 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35+30/60 20/70+30/60 60/35+30/60 20/35+90/60