Add 1/21 and 40/48
1/21 + 40/48 is 37/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
40/48 = 40 × 7/48 × 7 = 280/336 - Add the two like fractions:
16/336 + 280/336 = 16 + 280/336 = 296/336 - 296/336 simplified gives 37/42
- So, 1/21 + 40/48 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+40/48 1/21+80/48 1/42+40/48 1/21+40/96 3/21+40/48 1/63+40/48 5/21+40/48 7/21+40/48