Add 1/40 and 3/15
1/40 + 3/15 is 9/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
1/40 = 1 × 3/40 × 3 = 3/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Add the two like fractions:
3/120 + 24/120 = 3 + 24/120 = 27/120 - 27/120 simplified gives 9/40
- So, 1/40 + 3/15 = 9/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+3/15 1/40+6/15 1/80+3/15 1/40+3/30 3/40+3/15 1/40+9/15 1/40+3/45 5/40+3/15 1/40+3/75 7/40+3/15 1/40+21/15