Add 12/14 and 15/40
12/14 + 15/40 is 69/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
12/14 = 12 × 20/14 × 20 = 240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Add the two like fractions:
240/280 + 105/280 = 240 + 105/280 = 345/280 - 345/280 simplified gives 69/56
- So, 12/14 + 15/40 = 69/56
In mixed form: 113/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/14+15/40 12/14+30/40 12/28+15/40 12/14+15/80 36/14+15/40 12/14+45/40 12/42+15/40 60/14+15/40 12/14+75/40 12/70+15/40 84/14+15/40 12/98+15/40