Add 1/20 and 50/42
1st number: 1/20, 2nd number: 1 8/42
1/20 + 50/42 is 521/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
1/20 = 1 × 21/20 × 21 = 21/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
50/42 = 50 × 10/42 × 10 = 500/420 - Add the two like fractions:
21/420 + 500/420 = 21 + 500/420 = 521/420 - So, 1/20 + 50/42 = 521/420
In mixed form: 1101/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+50/42 1/40+50/42 1/20+50/84 3/20+50/42 1/60+50/42 5/20+50/42 7/20+50/42