Add 18/84 and 90/42
1st number: 18/84, 2nd number: 2 6/42
18/84 + 90/42 is 33/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
18/84 = 18 × 1/84 × 1 = 18/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
90/42 = 90 × 2/42 × 2 = 180/84 - Add the two like fractions:
18/84 + 180/84 = 18 + 180/84 = 198/84 - 198/84 simplified gives 33/14
- So, 18/84 + 90/42 = 33/14
In mixed form: 25/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+90/42 18/84+90/84 54/84+90/42 90/84+90/42