Add 20/12 and 70/40
1st number: 1 8/12, 2nd number: 1 30/40
20/12 + 70/40 is 41/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
20/12 = 20 × 10/12 × 10 = 200/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120 - Add the two like fractions:
200/120 + 210/120 = 200 + 210/120 = 410/120 - 410/120 simplified gives 41/12
- So, 20/12 + 70/40 = 41/12
In mixed form: 35/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+70/40 20/24+70/40 20/12+70/80 60/12+70/40 20/36+70/40 20/60+70/40 20/84+70/40