Add 20/12 and 40/35
1st number: 1 8/12, 2nd number: 1 5/35
20/12 + 40/35 is 59/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
40/35 = 40 × 12/35 × 12 = 480/420 - Add the two like fractions:
700/420 + 480/420 = 700 + 480/420 = 1180/420 - 1180/420 simplified gives 59/21
- So, 20/12 + 40/35 = 59/21
In mixed form: 217/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+40/35 20/12+80/35 20/24+40/35 20/12+40/70 60/12+40/35 20/36+40/35 20/60+40/35 20/84+40/35