Add 21/32 and 56/90
21/32 + 56/90 is 1841/1440.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
21/32 = 21 × 45/32 × 45 = 945/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
56/90 = 56 × 16/90 × 16 = 896/1440 - Add the two like fractions:
945/1440 + 896/1440 = 945 + 896/1440 = 1841/1440 - So, 21/32 + 56/90 = 1841/1440
In mixed form: 1401/1440
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/32+56/90 21/64+56/90 63/32+56/90 21/96+56/90