Add 18/84 and 90/25
1st number: 18/84, 2nd number: 3 15/25
18/84 + 90/25 is 267/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
18/84 = 18 × 25/84 × 25 = 450/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
90/25 = 90 × 84/25 × 84 = 7560/2100 - Add the two like fractions:
450/2100 + 7560/2100 = 450 + 7560/2100 = 8010/2100 - 8010/2100 simplified gives 267/70
- So, 18/84 + 90/25 = 267/70
In mixed form: 357/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+90/25 18/84+90/50 54/84+90/25 18/84+90/75 90/84+90/25