Add 6/21 and 1/40
6/21 + 1/40 is 87/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
6/21 = 6 × 40/21 × 40 = 240/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
1/40 = 1 × 21/40 × 21 = 21/840 - Add the two like fractions:
240/840 + 21/840 = 240 + 21/840 = 261/840 - 261/840 simplified gives 87/280
- So, 6/21 + 1/40 = 87/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+1/40 6/21+2/40 6/42+1/40 6/21+1/80 18/21+1/40 6/21+3/40 6/63+1/40 30/21+1/40 6/21+5/40 42/21+1/40 6/21+7/40