Add 21/32 and 84/20
1st number: 21/32, 2nd number: 4 4/20
21/32 + 84/20 is 777/160.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 20 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
21/32 = 21 × 5/32 × 5 = 105/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
84/20 = 84 × 8/20 × 8 = 672/160 - Add the two like fractions:
105/160 + 672/160 = 105 + 672/160 = 777/160 - So, 21/32 + 84/20 = 777/160
In mixed form: 4137/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/32+84/20 21/64+84/20 21/32+84/40 63/32+84/20 21/96+84/20 21/32+84/60