Add 28/12 and 70/40
1st number: 2 4/12, 2nd number: 1 30/40
28/12 + 70/40 is 49/12.
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,
28/12 = 28 × 10/12 × 10 = 280/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120 - Add the two like fractions:
280/120 + 210/120 = 280 + 210/120 = 490/120 - 490/120 simplified gives 49/12
- So, 28/12 + 70/40 = 49/12
In mixed form: 41/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+70/40 28/24+70/40 28/12+70/80 84/12+70/40 28/36+70/40 28/60+70/40 28/84+70/40