Add 3/21 and 7/32
3/21 + 7/32 is 81/224.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
3/21 = 3 × 32/21 × 32 = 96/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
7/32 = 7 × 21/32 × 21 = 147/672 - Add the two like fractions:
96/672 + 147/672 = 96 + 147/672 = 243/672 - 243/672 simplified gives 81/224
- So, 3/21 + 7/32 = 81/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21+7/32 3/21+14/32 3/42+7/32 3/21+7/64 9/21+7/32 3/21+21/32 3/63+7/32 3/21+7/96 15/21+7/32 3/21+35/32 3/21+49/32