Add 2/42 and 90/20
1st number: 2/42, 2nd number: 4 10/20
2/42 + 90/20 is 191/42.
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,
2/42 = 2 × 10/42 × 10 = 20/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Add the two like fractions:
20/420 + 1890/420 = 20 + 1890/420 = 1910/420 - 1910/420 simplified gives 191/42
- So, 2/42 + 90/20 = 191/42
In mixed form: 423/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+90/20 2/84+90/20 2/42+90/40 6/42+90/20 2/42+90/60 10/42+90/20 14/42+90/20