Add 40/84 and 3/40
40/84 + 3/40 is 463/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
40/84 = 40 × 10/84 × 10 = 400/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
3/40 = 3 × 21/40 × 21 = 63/840 - Add the two like fractions:
400/840 + 63/840 = 400 + 63/840 = 463/840 - So, 40/84 + 3/40 = 463/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84+3/40 40/84+6/40 40/84+3/80 40/84+9/40 40/84+15/40 40/84+21/40