Add 42/20 and 3/10
1st number: 2 2/20, 2nd number: 3/10
42/20 + 3/10 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
3/10 = 3 × 2/10 × 2 = 6/20 - Add the two like fractions:
42/20 + 6/20 = 42 + 6/20 = 48/20 - 48/20 simplified gives 12/5
- So, 42/20 + 3/10 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+3/10 42/20+6/10 42/40+3/10 42/20+3/20 42/20+9/10 42/60+3/10 42/20+3/30 42/20+15/10 42/20+3/50 42/20+21/10 42/20+3/70