Add 21/4 and 20/32
1st number: 5 1/4, 2nd number: 20/32
21/4 + 20/32 is 47/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 32 is 32
Next, find the equivalent fraction of both fractional numbers with denominator 32 - For the 1st fraction, since 4 × 8 = 32,
21/4 = 21 × 8/4 × 8 = 168/32 - Likewise, for the 2nd fraction, since 32 × 1 = 32,
20/32 = 20 × 1/32 × 1 = 20/32 - Add the two like fractions:
168/32 + 20/32 = 168 + 20/32 = 188/32 - 188/32 simplified gives 47/8
- So, 21/4 + 20/32 = 47/8
In mixed form: 57/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+20/32 21/4+40/32 21/8+20/32 21/4+20/64 63/4+20/32 21/4+60/32 21/12+20/32 21/4+20/96 21/20+20/32 21/28+20/32