Add 90/42 and 6/84
1st number: 2 6/42, 2nd number: 6/84
90/42 + 6/84 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
90/42 = 90 × 2/42 × 2 = 180/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
6/84 = 6 × 1/84 × 1 = 6/84 - Add the two like fractions:
180/84 + 6/84 = 180 + 6/84 = 186/84 - 186/84 simplified gives 31/14
- So, 90/42 + 6/84 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+12/84 90/84+6/84 90/42+18/84 90/42+30/84 90/42+42/84