Add 18/90 and 54/20
1st number: 18/90, 2nd number: 2 14/20
18/90 + 54/20 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
54/20 = 54 × 9/20 × 9 = 486/180 - Add the two like fractions:
36/180 + 486/180 = 36 + 486/180 = 522/180 - 522/180 simplified gives 29/10
- So, 18/90 + 54/20 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+54/20 18/90+54/40 54/90+54/20 18/90+54/60