Add 72/5 and 90/12
1st number: 14 2/5, 2nd number: 7 6/12
72/5 + 90/12 is 219/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
72/5 = 72 × 12/5 × 12 = 864/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Add the two like fractions:
864/60 + 450/60 = 864 + 450/60 = 1314/60 - 1314/60 simplified gives 219/10
- So, 72/5 + 90/12 = 219/10
In mixed form: 219/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+90/12 72/5+90/24 72/15+90/12 72/5+90/36 72/25+90/12 72/5+90/60 72/35+90/12 72/5+90/84