Add 60/90 and 90/72
1st number: 60/90, 2nd number: 1 18/72
60/90 + 90/72 is 23/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
60/90 = 60 × 4/90 × 4 = 240/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
240/360 + 450/360 = 240 + 450/360 = 690/360 - 690/360 simplified gives 23/12
- So, 60/90 + 90/72 = 23/12
In mixed form: 111/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: