Add 84/24 and 20/90
1st number: 3 12/24, 2nd number: 20/90
84/24 + 20/90 is 67/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
84/24 = 84 × 15/24 × 15 = 1260/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Add the two like fractions:
1260/360 + 80/360 = 1260 + 80/360 = 1340/360 - 1340/360 simplified gives 67/18
- So, 84/24 + 20/90 = 67/18
In mixed form: 313/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24+40/90 84/48+20/90 84/24+60/90 84/72+20/90