Add 20/24 and 84/90
20/24 + 84/90 is 53/30.
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,
20/24 = 20 × 15/24 × 15 = 300/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
84/90 = 84 × 4/90 × 4 = 336/360 - Add the two like fractions:
300/360 + 336/360 = 300 + 336/360 = 636/360 - 636/360 simplified gives 53/30
- So, 20/24 + 84/90 = 53/30
In mixed form: 123/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24+84/90 20/48+84/90 60/24+84/90 20/72+84/90