Add 21/40 and 1/6
21/40 + 1/6 is 83/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 6 × 20 = 120,
1/6 = 1 × 20/6 × 20 = 20/120 - Add the two like fractions:
63/120 + 20/120 = 63 + 20/120 = 83/120 - So, 21/40 + 1/6 = 83/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+1/6 21/40+2/6 21/80+1/6 21/40+1/12 63/40+1/6 21/40+3/6 21/40+1/18 21/40+5/6 21/40+1/30 21/40+7/6 21/40+1/42