Add 7/21 and 15/32
7/21 + 15/32 is 77/96.
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,
7/21 = 7 × 32/21 × 32 = 224/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
15/32 = 15 × 21/32 × 21 = 315/672 - Add the two like fractions:
224/672 + 315/672 = 224 + 315/672 = 539/672 - 539/672 simplified gives 77/96
- So, 7/21 + 15/32 = 77/96
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+15/32 7/21+30/32 7/42+15/32 7/21+15/64 7/21+45/32 7/63+15/32 7/21+15/96 35/21+15/32 7/21+75/32 49/21+15/32