Add 81/30 and 14/36
1st number: 2 21/30, 2nd number: 14/36
81/30 + 14/36 is 139/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
81/30 = 81 × 6/30 × 6 = 486/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
14/36 = 14 × 5/36 × 5 = 70/180 - Add the two like fractions:
486/180 + 70/180 = 486 + 70/180 = 556/180 - 556/180 simplified gives 139/45
- So, 81/30 + 14/36 = 139/45
In mixed form: 34/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+28/36 81/60+14/36 81/30+14/72 81/30+42/36 81/90+14/36 81/30+70/36 81/30+98/36