Add 1/40 and 15/7
1st number: 1/40, 2nd number: 2 1/7
1/40 + 15/7 is 607/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
15/7 = 15 × 40/7 × 40 = 600/280 - Add the two like fractions:
7/280 + 600/280 = 7 + 600/280 = 607/280 - So, 1/40 + 15/7 = 607/280
In mixed form: 247/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+15/7 1/40+30/7 1/80+15/7 1/40+15/14 3/40+15/7 1/40+45/7 1/40+15/21 5/40+15/7 1/40+75/7 1/40+15/35 7/40+15/7 1/40+15/49