Add 20/6 and 42/90
1st number: 3 2/6, 2nd number: 42/90
20/6 + 42/90 is 19/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
20/6 = 20 × 15/6 × 15 = 300/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Add the two like fractions:
300/90 + 42/90 = 300 + 42/90 = 342/90 - 342/90 simplified gives 19/5
- So, 20/6 + 42/90 = 19/5
In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6+42/90 20/6+84/90 20/12+42/90 60/6+42/90 20/18+42/90 20/30+42/90 20/42+42/90