Add 21/16 and 6/90
1st number: 1 5/16, 2nd number: 6/90
21/16 + 6/90 is 331/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
6/90 = 6 × 8/90 × 8 = 48/720 - Add the two like fractions:
945/720 + 48/720 = 945 + 48/720 = 993/720 - 993/720 simplified gives 331/240
- So, 21/16 + 6/90 = 331/240
In mixed form: 191/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16+6/90 21/16+12/90 21/32+6/90 63/16+6/90 21/16+18/90 21/48+6/90 21/16+30/90 21/80+6/90 21/16+42/90