Add 21/54 and 15/32
21/54 + 15/32 is 247/288.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 32 is 864
Next, find the equivalent fraction of both fractional numbers with denominator 864 - For the 1st fraction, since 54 × 16 = 864,
21/54 = 21 × 16/54 × 16 = 336/864 - Likewise, for the 2nd fraction, since 32 × 27 = 864,
15/32 = 15 × 27/32 × 27 = 405/864 - Add the two like fractions:
336/864 + 405/864 = 336 + 405/864 = 741/864 - 741/864 simplified gives 247/288
- So, 21/54 + 15/32 = 247/288
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54+15/32 21/54+30/32 21/54+15/64 63/54+15/32 21/54+45/32 21/54+15/96 21/54+75/32