Add 81/90 and 30/16
1st number: 81/90, 2nd number: 1 14/16
81/90 + 30/16 is 111/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
81/90 = 81 × 8/90 × 8 = 648/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
30/16 = 30 × 45/16 × 45 = 1350/720 - Add the two like fractions:
648/720 + 1350/720 = 648 + 1350/720 = 1998/720 - 1998/720 simplified gives 111/40
- So, 81/90 + 30/16 = 111/40
In mixed form: 231/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+60/16 81/90+30/32 81/90+90/16 81/90+30/48 81/90+30/80