Add 12/40 and 70/28
1st number: 12/40, 2nd number: 2 14/28
12/40 + 70/28 is 14/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
70/28 = 70 × 10/28 × 10 = 700/280 - Add the two like fractions:
84/280 + 700/280 = 84 + 700/280 = 784/280 - 784/280 simplified gives 14/5
- So, 12/40 + 70/28 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+70/28 12/80+70/28 12/40+70/56 36/40+70/28 12/40+70/84 60/40+70/28 84/40+70/28