Add 1/40 and 3/84
1/40 + 3/84 is 17/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
1/40 = 1 × 21/40 × 21 = 21/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
3/84 = 3 × 10/84 × 10 = 30/840 - Add the two like fractions:
21/840 + 30/840 = 21 + 30/840 = 51/840 - 51/840 simplified gives 17/280
- So, 1/40 + 3/84 = 17/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+3/84 1/40+6/84 1/80+3/84 3/40+3/84 1/40+9/84 5/40+3/84 1/40+15/84 7/40+3/84 1/40+21/84