Add 20/10 and 42/30
1st number: 2 0/10, 2nd number: 1 12/30
20/10 + 42/30 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
20/10 = 20 × 3/10 × 3 = 60/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Add the two like fractions:
60/30 + 42/30 = 60 + 42/30 = 102/30 - 102/30 simplified gives 17/5
- So, 20/10 + 42/30 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10+42/30 20/10+84/30 20/10+42/60 60/10+42/30 20/30+42/30 20/10+42/90 20/50+42/30 20/70+42/30