Add 50/42 and 45/20
1st number: 1 8/42, 2nd number: 2 5/20
50/42 + 45/20 is 289/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
50/42 = 50 × 10/42 × 10 = 500/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
45/20 = 45 × 21/20 × 21 = 945/420 - Add the two like fractions:
500/420 + 945/420 = 500 + 945/420 = 1445/420 - 1445/420 simplified gives 289/84
- So, 50/42 + 45/20 = 289/84
In mixed form: 337/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+90/20 50/84+45/20 50/42+45/40 50/42+45/60