Add 72/90 and 14/12
1st number: 72/90, 2nd number: 1 2/12
72/90 + 14/12 is 59/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
14/12 = 14 × 15/12 × 15 = 210/180 - Add the two like fractions:
144/180 + 210/180 = 144 + 210/180 = 354/180 - 354/180 simplified gives 59/30
- So, 72/90 + 14/12 = 59/30
In mixed form: 129/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+28/12 72/90+14/24 72/90+42/12 72/90+14/36 72/90+70/12 72/90+14/60 72/90+98/12 72/90+14/84